The children below are from a list of over 65,000 children who appear in the records of various New York City orphan asylums for whom information is available via Mr. Kidder.
Search Tips: It was very difficult to discern the letter “n” from the letter “u” in some of the old handwritten records so please keep this in mind when searching the list below. You may also wish to search using just a few letters of the last name in case part of the last name was unreadable on the original record. Keep an open mind as officials recorded how they heard the name rather than how it was actually spelled. Same for year of birth. Many children would lie about their age for one reason or another. For instance, if too old they may face prison instead of an orphan asylum. If your ancestor’s year of birth falls within four years (either side) of the year given in the list below, it would be worth having Mr. Kidder check for a positive match.
For those not sure if their ancestor was in a New York Orphan Asylum, but have found a name in the List of Children below that may be a match, Mr. Kidder will perform a “Family Discovery Search” for a base fee of $15.00 per individual or family being researched. Guests must fill in the Research Services form to provide information on the individual they want to confirm is in the existing records. There is no refund on the flat fee if no records are found in the original records, but Mr. Kidder will (when applicable) identify additional possible avenues of research at other archives, etc. that may have pertinent information on the individual or family being researched. Allow up to two weeks for completion. More information about this search and the “Detailed Family Search” (for those who have confirmed their ancestor is a match to one in the list below) can be found under Types of Records Searched. Contact Mr. Kidder using the Research Services form for confirmation of which research service to order if you are uncertain.
Make a donation to Mr. Kidder to help him continue his work on documenting America’s Orphan Train Movement and indexing old records.
Jump to Last Names:
A B C D E F G H I J K L Ma-Mc Me-My N O P Q R Sa-Sh Si-Sz T U V W X Y Z
| Last Name | First Name | Year of Birth (Approx.) |
|---|---|---|
| Oaker | Butcher | 1848 |
| Oaker | William | 1846 |
| Oakley | Catharine S. | 1843 |
| Oakley | Francis | |
| Oakley | Grace Viola | 1909 |
| Oakley | James | |
| Oakley | John | 1820s-30s |
| Oakley | John | 1876 |
| Oakley | John H. | |
| Oakley | John W. | 1848 |
| Oakley | Leonard | 1895 |
| Oakley | Nial Wheeler | 1907 |
| Oakley | Wesley John Edward | 1906 |
| Oakley | William | |
| Oakley alias Roffey | Henry | 1826 |
| Oakman | Martha | 1857 |
| Oakman | Martha | |
| Oakman | Walter | 1853 |
| Oakman | Walter | |
| Oakman | William | 1858 |
| Oakman | William | |
| Oakman | William or John | |
| Oakman | William, Jr. | |
| Oates | James | 1853 |
| Oates | John | 1885 |
| Oates | William | 1882 |
| Oatfield | James S. | 1824 |
| Oatman | Martha | 1855 |
| Oatman | Martha | |
| Oatman | Walter | 1852 |
| Oatman | Walter | 1853 |
| Oatman | Walter | |
| Oatman | William | 1858 |
| Oatman | William | |
| Oatman alias Oakman | William | 1858 |
| Oatman alias Oakman | William | |
| Oatman or Oatmen | Michael | 1829 |
| Oats | Patrick | 1865 |
| O'Baine | Joseph | 1847 |
| O'Baine | Joseph | |
| Obeid | Najeeb | |
| Ober | Benjamin | |
| Oberander | William | |
| Obergfell | Frederick | |
| Obergottzberger or Obergotzbager | Ignatius | 1854 |
| Oberheim | Joseph | |
| Oberheim | Nicholas | |
| Oberhofer | John | |
| Oberlander | John | |
| Oberlander | Lizzie | |
| Oberle | Julius | 1882 |
| Oberley | William | 1863 |
| Obermeyer | Annie | |
| Obermeyer | Henry | 1852 |
| Obermeyer | Henry | |
| Obermyer | Henry | |
| Obert | Mary | 1864 |
| Oberwarth | Lewis J. | |
| Oberwarth | Louis J. | |
| Oblatt | Alfred | |
| O'Brady | John | 1866 |
| Obremski | Walter | 1914 |
| Obrey | Abraham | |
| O'Brian | Elizabeth | 1845 |
| O'Brian | Ellen | 1838 |
| O'Brian | Ignatius | 1821 |
| O'Brian | James | 1839 |
| O'Brian | Jeremiah | 1842 |
| O'Brian | John | 1829 |
| O'Brian | John | 1840 |
| O'Brian | John | 1843 |
| O'Brian | John | 1846 |
| O'Brian | John | 1852 |
| O'Brian | John | 1856 |
| O'Brian | Margaret | 1827 |
| O'Brian | Margaret | 1844 |
| O'Brian | Maria | 1839 |
| O'Brian | Mary Francis | |
| O'Brian | Michael | 1844 |
| O'Brian | Patrick | 1815 |
| O'Brian | Patrick | 1840 |
| O'Brian | Richard | 1854 |
| O'Brian | Thomas | 1818 |
| O'Brian | William | 1836 |
| O'Brian | William | 1820s-30s |
| O'Brian | William | 1849 |
| O'Brien | Alfred | 1852 |
| O'Brien | Alice | 1883 |
| O'Brien | Annie | 1841 |
| O'Brien | Annie | |
| O'Brien | Augustine | 1861 |
| O'Brien | Bridget | 1822 |
| O'Brien | Bridget | |
| O'Brien | Catharine | 1848 |
| O'Brien | Catharine | |
| O'Brien | Catherine | 1855 |
| O'Brien | Catherine | |
| O'Brien | Charles | 1854 |
| O'Brien | Charlotte | 1828 |
| O'Brien | Daniel | |
| O'Brien | Daniel | 1854 |
| O'Brien | Daniel | 1857 |
| O'Brien | Daniel | |
| O'Brien | Delia | 1849 |
| O'Brien | Delia | |
| O'Brien | Dennis | 1846 |
| O'Brien | Dennis | 1866 |
| O'Brien | Dennis | |
| O'Brien | Edward | 1937 |
| O'Brien | Edward | 1853 |
| O'Brien | Edward | 1896 |
| O'Brien | Edward | |
| O'Brien | Eli | |
| O'Brien | Elizabeth | 1827 |
| O'Brien | Ephraim | |
| O'Brien | Felix | |
| O'Brien | Frank | 1897 |
| O'Brien | Frederick | 1870 |
| O'Brien | Grant | |
| O'Brien | Hannah | 1849 |
| O'Brien | Henry | 1853 |
| O'Brien | Henry | 1852 |
| O'Brien | Henry | 1873 |
| O'Brien | Henry | |
| O'Brien | J. | |
| O'Brien | James | 1825 |
| O'Brien | James | 1859 |
| O'Brien | James | 1855 |
| O'Brien | James | 1858 |
| O'Brien | James | 1867 |
| O'Brien | James | 1867 |
| O'Brien | James | 1871 |
| O'Brien | James | 1876 |
| O'Brien | James | 1884 |
| O'Brien | James | 1887 |
| O'Brien | James | |
| O'Brien | James | 1856 |
| O'Brien | Jennie | 1888 |
| O'Brien | John | 1890 |
| O'Brien | John | 1851 |
| O'Brien | John | 1852 |
| O'Brien | John | 1859 |
| O'Brien | John | 1817 |
| O'Brien | John | 1828 |
| O'Brien | John | 1833 |
| O'Brien | John | 1836 |
| O'Brien | John | 1853 |
| O'Brien | John | 1851 |
| O'Brien | John | 1853 |
| O'Brien | John | 1854 |
| O'Brien | John | 1859 |
| O'Brien | John | 1861 |
| O'Brien | John | 1862 |
| O'Brien | John | 1866 |
| O'Brien | John | 1873 |
| O'Brien | John | 1883 |
| O'Brien | John | |
| O'Brien | John | |
| O'Brien | John aka Jeremiah | 1852 |
| O'Brien | John R. | 1856 |
| O'Brien | Joseph | 1895 |
| O'Brien | Joseph | |
| O'Brien | Joseph, Jr. | |
| O'Brien | Josephine | 1854 |
| O'Brien | Julia | 1823 |
| O'Brien | Lydia Ann | 1822 |
| O'Brien | Margaret | |
| O'Brien | Mary | 1831 |
| O'Brien | Mary | |
| O'Brien | Mary A. | |
| O'Brien | Mary Ann | 1852 |
| O'Brien | Mary F. | |
| O'Brien | Mary Francis | 1852 |
| O'Brien | Mary Jane | |
| O'Brien | Michael | 1850 |
| O'Brien | Michael | 1847 |
| O'Brien | Michael | 1860s |
| O'Brien | Michael | 1869 |
| O'Brien | Michael | 1896 |
| O'Brien | Michael | |
| O'Brien | Michael T. | 1848 |
| O'Brien | Michael T. | |
| O'Brien | Michael T. | 1850 |
| O'Brien | Michael T. | |
| O'Brien | Patrick | 1839 |
| O'Brien | Patrick | 1858 |
| O'Brien | Patrick | 1857 |
| O'Brien | Patrick | 1869 |
| O'Brien | Patrick | |
| O'Brien | Peter | 1848 |
| O'Brien | Peter | |
| O'Brien | Philip | |
| O'Brien | Richard | 1855 |
| O'Brien | Richard | 1855 |
| O'Brien | Richard | 1854 |
| O'Brien | Richard | 1861 |
| O'Brien | Richard | 1900 |
| O'Brien | Richard | |
| O'Brien | Robert | 1851 |
| O'Brien | Robert | |
| O'Brien | Rosanna | 1847 |
| O'Brien | Rosanna | 1848 |
| O'Brien | Rosanna | |
| O'Brien | Terrence | 1838 |
| O'Brien | Thomas | 1847 |
| O'Brien | Thomas | 1830 |
| O'Brien | Thomas | 1831 |
| O'Brien | Thomas | 1831 |
| O'Brien | Thomas | 1846 |
| O'Brien | Thomas | 1857 |
| O'Brien | Thomas | 1860 |
| O'Brien | Thomas | 1865 |
| O'Brien | Thomas | 1869 |
| O'Brien | Thomas | |
| O'Brien | Thomas L. | |
| O'Brien | Timothy | 1869 |
| O'Brien | Timothy | |
| O'Brien | Victor | 1914 |
| O'Brien | William | 1847 |
| O'Brien | William | 1816 |
| O'Brien | William | 1849 |
| O'Brien | William | 1856 |
| O'Brien | William | 1856 |
| O'Brien | William | 1866 |
| O'Brien | William | 1861 |
| O'Brien | William | 1871 |
| O'Brien | William | 1871 |
| O'Brien | William | 1875 |
| O'Brien | William | 1882 |
| O'Brien | William | 1899 |
| O'Brien | William | |
| O'Brien | William J. | |
| O'Brien | William P. | 1823 |
| O'Brien | Oswin Jerome | 1855 |
| O'Brien | John | 1884 |
| O'Brien (Adoptive surname) | Eli | 1866 |
| O'Brien alias Borne | Peter | 1854 |
| O'Brien alias Delia | Elizabeth | |
| O'Brien alias E. J. Carroll | Elizabeth | |
| O'Brien alias E. J. Carroll | Elizabeth | |
| O'Brien alias Eliza J. Carroll | Elizabeth | |
| O'Brien alias Graves | William | |
| O'Brien alias James Kehoe | Edward | 1874 |
| O'Brien alias James Smith | John | 1851 |
| O'Brien alias Kelly | Thomas | 1860 |
| O'Brien alias McCarthy | Thomas | |
| O'Brien alias Ryan | Michael | |
| O'Brien alias Tully | Michael | 1829 |
| O'Brien O'Brine | Henry | 1850 |
| O'Brien or O'Brian | Edward | 1848 |
| O'Brien or O'Brine | Daniel | |
| O'Brien or O'Brine | Edward J. | |
| O'Brine | Andrew | |
| O'Brine | Bridget | 1850 |
| O'Brine | Bridget | 1852 |
| O'Brine | Catharine | 1855 |
| O'Brine | Catharine | |
| O'Brine | Daniel | |
| O'Brine | Delia | |
| O'Brine | Edward | 1854 |
| O'Brine | Edward | |
| O'Brine | Ella or Delia | |
| O'Brine | Ellen | |
| O'Brine | Henry | |
| O'Brine | James | 1852 |
| O'Brine | John | |
| O'Brine | Margaret | 1848 |
| O'Brine | Margaret | |
| O'Brine | Michael | 1848 |
| O'Brine | Michael | |
| O'Brine | Patrick | |
| O'Brine | Rosanna | |
| O'Brine | William | 1849 |
| O'Brine | William | |
| O'Brine [O'Brien?] | William | Late 1840s-early 50s |
| O'Brine [O'Brien] | Margaret | |
| O'Brine alias Skelly | Thomas | |
| O'Brine or O'Brien | Catherine | |
| O'Brine or O'Brien | Edward | |
| O'Brine or O'Brien | William | |
| O'Briskie | Joseph | 1906 |
| Obry | Lenny | 1819 |
| O'Bryan | Daniel | 1850 |
| O'Bryan | David | 1848 |
| O'Bryan | Edward | 1844 |
| O'Bryan | Hugh | 1844 |
| O'Bryan | James | 1843 |
| O'Bryan | John | |
| O'Bryan | Joseph | 1838 |
| O'Bryan | Richard | 1851 |
| O'Bryan | Thomas P. | |
| Obser | John | |
| Obshiler | Jacob | 1890 |
| O'Callahan | Anna | 1852 |
| O'Callahan | Francis | 1853 |
| O'Camp | Charles | 1853 |
| Occhicone | Michael | 1902 |
| Occhinzzo | Frank | |
| Ochellbrod | Charles | 1872 |
| Ochelmann | Charles | |
| Ochs | Adam | |
| Ochs | Adam alias Charles | |
| Ochs | Daniel | |
| Ochs | Julius, Jr. | 1891 |
| Ochs | Margaret | 1878 |
| Ochs | Samuel | |
| Ochs | William | |
| Ochsenriter | George | 1877 |
| Ochsman | Frederick | |
| Ockerman | John | |
| Ocloine alias David Schadosky | William | 1867 |
| Oconnell | Michael | |
| O'Connell | Charles | 1864 |
| O'Connell | Daniel | 1845 |
| O'Connell | Daniel | 1861 |
| O'Connell | Daniel | 1863 |
| O'Connell | Daniel | |
| O'Connell | Edward | |
| O'Connell | Frances | 1883 |
| O'Connell | Frank | 1901 |
| O'Connell | Frederick | 1854 |
| O'Connell | George | |
| O'Connell | Irving | 1913 |
| O'Connell | James | 1854 |
| O'Connell | James | 1864 |
| O'Connell | John | 1857 |
| O'Connell | John | 1869 |
| O'Connell | John | |
| O'Connell | John | |
| O'Connell | Joseph | 1852 |
| O'Connell | Joseph | |
| O'Connell | Margaret | |
| O'Connell | Mary E. | 1864 |
| O'Connell | Michael | 1853 |
| O'Connell | Michael | |
| O'Connell | Patrick | 1899 |
| O'Connell | Richard | |
| O'Connell | Theodore | 1865 |
| O'Connell | Thomas | 1860 |
| O'Connell | William | 1851 |
| O'Connell | William | 1851 |
| O'Connell | William | 1886 |
| O'Connell | William | |
| O'Connell | William T. | 1850 |
| O'Connell aka O'Connor | Daniel | 1869 |
| O'Connell alias James McCarthy | John W. | 1881 |
| O'Connell or O'Connor | Thomas | 1848 |
| O'Conner | Alice | |
| O'Conner | Bridget | 1845 |
| O'Conner | Catharine | 1845 |
| O'Conner | Catherine | 1836 |
| O'Conner | Charles | 1845 |
| O'Conner | Charles | 1859 |
| O'Conner | Delia | |
| O'Conner | Dennis | 1846 |
| O'Conner | Ellen | 1829 |
| O'Conner | Ellen Maria | 1862 |
| O'Conner | Eugene | 1844 |
| O'Conner | Eugene | |
| O'Conner | Fred | |
| O'Conner | George | |
| O'Conner | Hugh | 1851 |
| O'Conner | James | 1841 |
| O'Conner | James | 1845 |
| O'Conner | James | 1846 |
| O'Conner | James | 1849 |
| O'Conner | James | |
| O'Conner | John | 1841 |
| O'Conner | John | 1842 |
| O'Conner | John | 1820s-30s |
| O'Conner | John | 1845 |
| O'Conner | John | 1861 |
| O'Conner | John | 1863 |
| O'Conner | John | |
| O'Conner | John | |
| O'Conner | John F. | 1845 |
| O'Conner | John H. | |
| O'Conner | Margaret | 1837 |
| O'Conner | Margaret | 1852 |
| O'Conner | Mary | 1845 |
| O'Conner | Mary Ann | 1828 |
| O'Conner | Michael | 1863 |
| O'Conner | Patrick | 1842 |
| O'Conner | Philip | 1831 |
| O'Conner | Robert | 1842 |
| O'Conner | Thomas | |
| O'Conner | Thomas, Jr. | |
| O'Conner | William C. | 1849 |
| O'Conner alias John T. Johnson | Thomas | 1854 |
| O'Conner alias Leo O'Conners | George | 1899 |
| O'Conners | Mary | 1844 |
| O'Connor | Alice | |
| O'Connor | Andrew | 1858 |
| O'Connor | Annie | 1883 |
| O'Connor | Catharine | 1841 |
| O'Connor | Cecelia | |
| O'Connor | Celia | |
| O'Connor | Charles | 1832 |
| O'Connor | Charles | |
| O'Connor | Daniel F. | |
| O'Connor | David | 1904 |
| O'Connor | Deborah Ann | 1826 |
| O'Connor | Dennis | 1903 |
| O'Connor | Edward | 1847 |
| O'Connor | Ellen | 1825 |
| O'Connor | Eugene | 1900 |
| O'Connor | Eugene | |
| O'Connor | Florence | 1856 |
| O'Connor | Francis | 1914 |
| O'Connor | Franklin | |
| O'Connor | Fred | |
| O'Connor | Frederick | |
| O'Connor | George | |
| O'Connor | Harry | 1906 |
| O'Connor | Helen | 1887 |
| O'Connor | James | 1853 |
| O'Connor | James | 1853 |
| O'Connor | James | 1867 |
| O'Connor | James | 1868 |
| O'Connor | James | 1868 |
| O'Connor | James | 1884 |
| O'Connor | James | 1886 |
| O'Connor | James | |
| O'Connor | James A. | 1902 |
| O'Connor | James A. [John H. written above James A.] | |
| O'Connor | James O. | 1860 |
| O'Connor | Jeremiah | 1865 |
| O'Connor | John | 1852 |
| O'Connor | John | 1852 |
| O'Connor | John | 1852 |
| O'Connor | John | 1849 |
| O'Connor | John | 1852 |
| O'Connor | John | 1862 |
| O'Connor | John | 1866 |
| O'Connor | John | 1879 |
| O'Connor | John | |
| O'Connor | John H. | |
| O'Connor | John J. | 1866 |
| O'Connor | John J. | |
| O'Connor | Joseph | 1851 |
| O'Connor | Joseph | 1909 |
| O'Connor | Kate | 1864 |
| O'Connor | Lawrence | 1820s-30s |
| O'Connor | Lawrence | 1897 |
| O'Connor | Lawrence | 1915 |
| O'Connor | Martin | 1902 |
| O'Connor | Mary | 1860 |
| O'Connor | Mary | |
| O'Connor | Michael | 1858 |
| O'Connor | Michael | 1860 |
| O'Connor | Michael | 1882 |
| O'Connor | Michael | 1885 |
| O'Connor | Patrick | 1851 |
| O'Connor | Patrick | |
| O'Connor | Peter | 1866 |
| O'Connor | Peter | |
| O'Connor | Philip | |
| O'Connor | Robert | |
| O'Connor | Samuel | 1862 |
| O'Connor | Stephen | |
| O'Connor | Thomas | 1820s-30s |
| O'Connor | Thomas | 1850 |
| O'Connor | Thomas | 1867 |
| O'Connor | Thomas | 1862 |
| O'Connor | Thomas | 1862 |
| O'Connor | Thomas | 1870 |
| O'Connor | Thomas | 1872 |
| O'Connor | Thomas | 1880 |
| O'Connor | Thomas | |
| O'Connor | Thomas B. | 1856 |
| O'Connor | Thomas, Jr. | |
| O'Connor | Vincent | 1913 |
| O'Connor | William | 1817 |
| O'Connor | William | 1824 |
| O'Connor | William | 1860 |
| O'Connor | William | 1892 |
| O'Connor | William | |
| O'Connor | Mary | 1867 |
| O'Connor alias Dennis O'Connell | John T. | 1871 |
| O'Connor or O'Conner | Henry | 1856 |
| O'Connor or O'Connors alias William Johnson | Thomas | 1865 |
| O'Connors | Catharine | 1820s-30s |
| O'Connors | John | 1871 |
| O'Connors aka Connors | Thomas | 1865 |
| O'Creene | Le Roy | 1920 |
| O'Creene | Lucretia | 1923 |
| O'Day | Catharine | 1832 |
| O'Day | John | 1864 |
| O'Day | John | 1870 |
| O'Day | Mollie | 1882 |
| O'Day | William | 1865 |
| Oddo | Bessie | |
| Oddo | Joseph | 1898 |
| Oddo | Lulu | |
| Oddo | Salvatore | 1909 |
| Oddo | Tony | |
| O'Deay | James | 1850 |
| O'Deay | James | |
| O'Deay | James | 1850 |
| Odell | Alexander | |
| Odell | Charles | 1845 |
| Odell | Charles | 1845 |
| Odell | Charles | |
| Odell | Charlotte | 1863 |
| Odell | George H. | |
| Odell | Gordon | 1886 |
| Odell | James | |
| Odell | John | |
| Odell | John S. | 1866 |
| Odell | Justina | 1841 |
| Odell | Rozilla | 1870 |
| Odell | Samuel | 1839 |
| Odell | William Henry | 1811 |
| O'Dell | Clarence | 1875 |
| O'Dell | Daniel | 1873 |
| O'Dell | Harry | 1886 |
| O'Dell | Mary | 1868 |
| O'Dell | Robert | 1838 |
| Odell alias Evangeline Watson | Caroline | 1820s-30s |
| Oderwald | Emma | |
| Oderwald | Jacob | |
| Oderwald or Odewald | Emma | |
| Odewald | Emma | |
| Odewald | Jacob | |
| Odewald or Odenwald | Emma | |
| Odewald or Odenwald | Jacob | |
| Odgen | Paul | |
| Odlam | Minnie A. | 1866 |
| Odlum | Aloysius | 1911 |
| Odlum | Hannah E. | 1863 |
| Odlum | James H. | 1871 |
| O'Doche | William Henry | |
| O'Donahue | Delia | 1862 |
| O'Donald | Catherine | 1851 |
| O'Donald | Margaret | 1854 |
| O'Donald alias Daniel F. Daniels | Daniel | 1825 |
| Odonne | George | 1869 |
| O'Donnel | Patrick | 1880 |
| O'Donnell | Annie | |
| O'Donnell | Anthony | 1882 |
| O'Donnell | Bernard | 1863 |
| O'Donnell | Catharine | |
| O'Donnell | Catherine | |
| O'Donnell | Charles | 1871 |
| O'Donnell | Charles | |
| O'Donnell | Daniel | 1868 |
| O'Donnell | Dominick | 1850 |
| O'Donnell | Edward | 1834 |
| O'Donnell | Edward | 1844 |
| O'Donnell | Edward | 1893 |
| O'Donnell | Ellen | 1862 |
| O'Donnell | Eugene | 1849 |
| O'Donnell | Eugene | |
| O'Donnell | Festus | 1862 |
| O'Donnell | Frances | |
| O'Donnell | Francis | |
| O'Donnell | George | 1849 |
| O'Donnell | George | 1868 |
| O'Donnell | George | |
| O'Donnell | Hugh | 1875 |
| O'Donnell | James | 1853 |
| O'Donnell | James | 1837 |
| O'Donnell | James | 1855 |
| O'Donnell | James | 1867 |
| O'Donnell | James | 1885 |
| O'Donnell | James | 1904 |
| O'Donnell | James | |
| O'Donnell | Jane | 1848 |
| O'Donnell | Jane | |
| O'Donnell | John | 1846 |
| O'Donnell | John | 1862 |
| O'Donnell | John | 1863 |
| O'Donnell | John | 1867 |
| O'Donnell | John | 1875 |
| O'Donnell | John | |
| O'Donnell | Joseph | 1850 |
| O'Donnell | Joseph | |
| O'Donnell | Julia B. | 1910 |
| O'Donnell | Martin | 1900 |
| O'Donnell | Mary | 1844 |
| O'Donnell | Mary | 1848 |
| O'Donnell | Mary W. | |
| O'Donnell | Melvin Clifford | 1909 |
| O'Donnell | Michael | 1868 |
| O'Donnell | Michael | 1898 |
| O'Donnell | Patrick | 1851 |
| O'Donnell | Patrick | 1862 |
| O'Donnell | Patrick | |
| O'Donnell | Sarah | 1870 |
| O'Donnell | Stephen | 1844 |
| O'Donnell | Stephen | 1874 |
| O'Donnell | Thomas | |
| O'Donnell | Thomas, Jr. | |
| O'Donnell | William | 1816 |
| O'Donnell | William | 1846 |
| O'Donnell | William | 1851 |
| O'Donnell | William | |
| O'Donnell | William, Jr. | 1878 |
| O'Donnell aka O'Dolald | Francis | 1840 |
| O'Donnell alias Prehn | Joseph | 1901 |
| O'Donnelly | Margaret | 1826 |
| O'Donnelly | Mary | |
| O'Donnnell | John | |
| O'Donoghue | Timothy | 1872 |
| O'Donohue | Margaret | 1828 |
| O'Dowd | Joseph | |
| Oechsler | Louis, Jr. | |
| Oeffen | Albert | |
| Oeffen | Charles | |
| Oegera | George | |
| Oehlerking | William | |
| Oehlhaffen | Martin | 1869 |
| Oehlhoffen | Martin | |
| Oehlhoffer | Martin | |
| Oehlrich | Henry | 1852 |
| Oehlrich | Henry | |
| Oehman | George | |
| Oehman | John | |
| Oehmen | George | |
| Oehmen | John | |
| Oeitle | Carl | 1856 |
| Oeitle | Carl | |
| Oelgner | Thomas | 1880s-mid 90s |
| Oelkers | John | |
| Oelzner | Robert | 1851 |
| Oelzner | Robert | 1853 |
| Oelzner | Robert | 1853 |
| Oelzner | Robert | |
| Oelzner or Oelgner | Thomas Edward | 1883 |
| Oementro | Joseph | 1874 |
| Oertel | Frederick W. | |
| Oertell | Albert | |
| Oerthel | Frederick | |
| Oerthel | Frederick W. | |
| Oertl | Frederick W. | |
| Oeser | Otto | 1897 |
| Oettine | Phillip | |
| Oetting | William | |
| Oettinger | John | |
| Oettinger | Moses | |
| Oetzel | Charles | |
| Oetzel | William | |
| O'Farrell | Richard | 1833 |
| Ofeldt | Kenneth | 1924 |
| Ofeldt | Marian | 1928 |
| Offen | Albert, Jr. | |
| Offen | Brerett | 1904 |
| Offen | Charles | |
| Offenhendar | Joseph | 1893 |
| Offerman | Herman | |
| Offinger | Harry | |
| Offinger | Louis | 1884 |
| Offman | Martin | 1850 |
| Offman | Martin | |
| Offold | Francis | |
| O'Flaherty | George | 1891 |
| O'Flaherty | James | 1848 |
| O'Flaherty | James | 1869 |
| O'Flaherty | Thomas | |
| Ofthalmidon aka Brown | Helen | 1918 |
| O'Garra | Ellen | |
| O'Garrow | Thomas | 1839 |
| Ogden | Betty | 1936 |
| Ogden | Helena | 1868 |
| Ogden | Jonathan | 1816 |
| Ogden | Lewis | 1938 |
| Ogden | Shirley | 1939 |
| Ogden | William H. | 1851 |
| Ogeda | Manual | |
| Oggero | Anthony | 1910 |
| Ogilby | John | |
| Ogilvie | George | 1880 |
| Ogle | Hattie | 1879 |
| Ogle | Mary A. | 1864 |
| Ogle | Samuel | |
| Oglesby | Henry | 1841 |
| O'Gorman | Joseph | |
| O'Gorman | Mary Ann | 1813 |
| O'Gorman | Patrick | 1868 |
| O'Gorman | Patrick | 1916 |
| O'Gorman | Richard | 1863 |
| O'Gorman | Richard alias Michael | 1870 |
| O'Grady | George | 1866 |
| O'Grady | Henry | 1850 |
| O'Grady | John | 1862 |
| O'Grady | John | 1899 |
| O'Grady | Joseph | 1867 |
| O'Grady | Mary | 1815 |
| O'Grady | Michael | 1871 |
| O'Grady | Patrick | 1860s |
| O'Grady | Patrick | |
| O'Grady | Thomas | 1903 |
| O'Grady aka Grady | William | 1868 |
| O'Grady alias Grady | Charles | 1905 |
| O'Hagan | John | 1870 |
| O'Hagen | Ida | |
| O'Halloran | John | 1876 |
| O'Handlin | Daniel | 1839 |
| O'Hanlon | Catharine | 1846 |
| O'Hanlon | Catharine | |
| O'Hanlon | Thomas | 1900 |
| O'Hanlon | William | 1840 |
| O'Hara | Edward | 1858 |
| O'Hara | Eugene | 1855 |
| O'Hara | Francis | 1868 |
| O'Hara | Hugh | 1854 |
| O'Hara | James | 1853 |
| O'Hara | James | 1843 |
| O'Hara | James | 1853 |
| O'Hara | James | 1858 |
| O'Hara | James | |
| O'Hara | John | 1849 |
| O'Hara | John | 1879 |
| O'Hara | John | 1882 |
| O'Hara | Joseph alias James | 1879 |
| O'Hara | Maggie | 1882 |
| O'Hara | Mary | |
| O'Hara | Patrick | 1876 |
| O'Hara | Patrick | 1880 |
| O'Hara | Peter | |
| O'Hara | Thomas | 1850 |
| O'Hara aka "Fat" | James | 1918 |
| O'Hara alias Harry McMahon alias McGuahav alias Earl McMahon | Joseph | 1899 |
| O'Hare | Annie | 1886 |
| O'Hare | Daniel | 1860s |
| O'Hare | Daniel | 1866 |
| O'Hare | Frederick | 1872 |
| O'Hare | John | 1835 |
| O'Hare | John | 1837 |
| O'Hare | John | 1868 |
| O'Hare | Martin | 1866 |
| O'Hare | Raymond | 1901 |
| O'Hare | Stephen | 1879 |
| O'Harra | Michael | 1846 |
| O'Harran | Edward | 1870 |
| O'Harran | Patrick | 1866 |
| O'Hearn | Dennis | |
| O'Hearn | Dennis | 1852 |
| O'Hearn | Kate | 1886 |
| O'Hearn | Patrick | 1851 |
| O'Hearn | Thomas | 1855 |
| O'Hearn | Nora | 1860 |
| O'Hearne | Michael | 1836 |
| O'Hearne aka Herne | Patrick | 1836 |
| O'Hearne alias Ahern | Dennis | 1863 |
| O'Hern | John | 1864 |
| O'Herne | Patrick | 1851 |
| O'Herrin | Edward | |
| O'Herrin | Patrick | |
| O'Herrin | Thomas | |
| Ohl | Annie | |
| Ohler | Louis | 1864 |
| Ohlweiler | Charles | |
| Ohlweiler | Frederick | |
| Ohnen | John | |
| Ohner | John | 1847 |
| O'Holland | James | |
| O'Holland | James, Jr. | |
| Ohrey | Vance | |
| Ohsse | Frederick | 1856 |
| Ohswaldt | Paul | 1875 |
| Oipriano | Bardi | 1910 |
| Oiseo | Rocco | |
| Oiseo | Vito | |
| Ojerholm | Adelaide Frances | 1908 |
| Ojerholm | Dorothy Evangeline | 1908 |
| O'Kane | James | 1871 |
| O'Kane | John | 1867 |
| Oke | Conrad | |
| O'Keef | Ellen | 1852 |
| O'Keef | Ellen | |
| O'Keef | Jeremiah | |
| O'Keef | John | 1857 |
| O'Keef | Michael | |
| O'Keefe | Abbie T. | |
| O'Keefe | Arthur | 1851 |
| O'Keefe | Edward | |
| O'Keefe | George | 1901 |
| O'Keefe | Hannah | 1867 |
| O'Keefe | James | 1849 |
| O'Keefe | James | 1843 |
| O'Keefe | James | 1858 |
| O'Keefe | James | 1886 |
| O'Keefe | Jeremiah | 1847 |
| O'Keefe | Jeremiah | 1851 |
| O'Keefe | John | 1858 |
| O'Keefe | John | 1861 |
| O'Keefe | John | |
| O'Keefe | Mary | 1866 |
| O'Keefe | Michael | 1858 |
| O'Keefe | Owen | 1862 |
| O'Keefe | Patrick | 1880 |
| O'Keefe | Richard | 1861 |
| O'Keefe | Thomas | 1866 |
| O'Keefe | Thomas | 1868 |
| O'Keefe aka Keefe | John | 1856 |
| O'Keeffe | David | 1872 |
| O'Keep | Ellen | |
| Oker | Conrad | |
| Okin | Max | |
| Olah | Lewis | |
| Olan | Ernest | 1904 |
| Olara | Angela | |
| Olara | Felipe | |
| O'Lary | Thomas | |
| Olava | Angela | |
| Olava | Felipe W. | |
| Olcott | Richard | 1852 |
| Olden | Zenis | 1895 |
| Oldenburg | Elting | 1904 |
| Oldenburg | Harold | |
| Olding or Oldwig? | Sarah | |
| Oldrin | Willis G. | |
| Oldring | Reuben | 1884 |
| Oldring | Sarah | |
| Oldroyd | Ralph J. | |
| Olds | James | 1831 |
| Oldwig | Sarah | |
| O'Leary | Daniel | 1870 |
| O'Leary | Daniel | 1880 |
| O'Leary | Edward | 1882 |
| O'Leary | Francis | 1882 |
| O'Leary | James | 1879 |
| O'Leary | Jeremiah | 1849 |
| O'Leary | John | 1836 |
| O'Leary | John | 1856 |
| O'Leary | Martin | 1900 |
| O'Leary | Michael | |
| O'Leary | Patrick | 1861 |
| O'Leary | Thomas | |
| O'Leary | Timothy | 1846 |
| O'Leary | Timothy | |
| O'Leary aka Stabell | George | 1896 |
| Olechnicki | John | 1908 |
| Olee | Joseph | 1901 |
| Olek | Edward | 1916 |
| O'Lena | Theodore | 1860 |
| Olenick | Israel | |
| Olenick alias Irving | Max | 1899 |
| Olin | George | 1845 |
| Olings alias Owens | William | 1913 |
| Olisano or Alisano | Michele | 1899 |
| Olito | Fiore | 1913 |
| Oliva | Aleck | |
| Oliva | Christopher | |
| Oliva | Ettore | 1909 |
| Oliva | Lama | |
| Oliva | Louise | |
| Olivari | Julio | |
| Olive | Charles H. | |
| Olive | Edgar A. | |
| Olive | John F. | |
| Olive | Otto P. | |
| Olivelt | John D. | 1867 |
| Oliver | Amelia F. | 1855 |
| Oliver | Amelia F. | |
| Oliver | Ann M. | 1827 |
| Oliver | Benjamin | |
| Oliver | Charles | |
| Oliver | Douglas | 1868 |
| Oliver | Edward | 1892 |
| Oliver | Ernest | 1890 |
| Oliver | Ernest | |
| Oliver | Fanny | |
| Oliver | Frederick | 1826 |
| Oliver | George | |
| Oliver | Harry | |
| Oliver | John | 1854 |
| Oliver | John | 1839 |
| Oliver | John | 1854 |
| Oliver | John | |
| Oliver | John C. | 1853 |
| Oliver | John C. | 1854 |
| Oliver | John C. | 1854 |
| Oliver | John C. | 1854 |
| Oliver | John C. | 1854 |
| Oliver | John C. | 1854 |
| Oliver | John C. | |
| Oliver | John C. F. | |
| Oliver | John C. F. | |
| Oliver | John F. | |
| Oliver | John H. | |
| Oliver | John H. | |
| Oliver | Laurence | |
| Oliver | Lawrence | 1920 |
| Oliver | Lewis | 1846 |
| Oliver | Lewis | 1849 |
| Oliver | Lewis | |
| Oliver | Louisa | |
| Oliver | Martha | |
| Oliver | Nancy M. | |
| Oliver | Paul | 1897 |
| Oliver | Thomas | |
| Oliver | William | |
| Oliveri | Dominick | 1911 |
| Oliverius | Edward | |
| Olivier | August | |
| Olivier | George | |
| Olivieri | Anthony | 1914 |
| Ollett | Mary | 1848 |
| Olliver | William | 1825 |
| Ollschlager | Gustav | |
| Olmer alias Ullmer | Frederick | |
| Olmstead | Edward | |
| Olmstead | Edwin | |
| Olmstead | Walter | 1859 |
| Olmstead | Walter | |
| Olmsted | Annie | 1871 |
| Olmsted | James | 1812 |
| Olmsted | Richard Calvin | 1908 |
| Olney | Vance L. | 1901 |
| O'Loughlin | James | 1907 |
| O'Loughlin | Margaret | 1853 |
| O'Loughlin | Thomas | 1867 |
| O'Loughlin | Timothy | 1858 |
| Olover | John C. | |
| Olsen | Aanon | 1900 |
| Olsen | Ann | 1855 |
| Olsen | Ann | |
| Olsen | Annon | |
| Olsen | Catharine | |
| Olsen | Catherine | 1857 |
| Olsen | Catherine | |
| Olsen | Charles | |
| Olsen | Einer | |
| Olsen | Emil | |
| Olsen | Erling | 1915 |
| Olsen | Harry | |
| Olsen | Henry | |
| Olsen | Jane | 1916 |
| Olsen | John | |
| Olsen | Nelson | |
| Olsen | Norman | |
| Olsen | Oscar | 1887 |
| Olsen | Oscar | |
| Olsen | Peter | |
| Olsen | Ralph | |
| Olsen aka Carney | James | 1932 |
| Olsen aka Carney | Madeline | 1930 |
| Olsen aka Carney | Mildred | 1935 |
| Olshevitz | Morris | |
| Olsiewski | John | 1903 |
| Olsiewski | Peter | 1903 |
| Olson | Alvin | |
| Olson | Henry | 1910 |
| Olson | Lawrence | 1913 |
| Olson | Oscar | |
| Olssen | James I. | 1825 |
| Olszanski | Walter | 1903 |
| Olt | Henry | |
| Oltan | George | |
| Oltan | John, Jr. | |
| Oltenburg | Joseph | |
| Oltsmann | Charles | |
| Oltsmann | Julia | |
| Oltsmann | William | |
| Oltsmanns | Augusta | |
| Oltsmanns | Sophia | |
| Olvany | Hugh | |
| Olwitz alias Abe Rubington | Max | 1887 |
| Olzel | Catheine | |
| O'Malley | Bridget | 1860s-early 1870s |
| O'Malley | Joseph | 1876 |
| O'Mally alias O'Mara | Patrick | 1857 |
| Omar | Clyde | |
| O'Mara | James | 1845 |
| O'Mara | James | 1865 |
| O'Mara | John H. | 1855 |
| O'Mara | Thomas | 1858 |
| O'Meally | Ferdinand V. | 1934 |
| O'Mealy | Francis | 1865 |
| O'Meara | Julia | 1820s-30s |
| Omelia | Mary Ellen | 1856 |
| O'Melia | Harry | |
| Omorosa | Robert | |
| On Jung | Sam | 1928 |
| Onderdonk | William | 1890 |
| O'Neal | Ann | 1824 |
| O'Neal | Bernard | 1843 |
| O'Neal | Catharine | 1832 |
| O'Neal | Harriet | 1823 |
| O'Neal | Honora | 1836 |
| O'Neal | Hugh | |
| O'Neal | James | 1819 |
| O'Neal | Margaret | |
| O'Neil | Andrew | 1852 |
| O'Neil | Andrew | |
| O'Neil | Ann | 1838 |
| O'Neil | Anna | 1848 |
| O'Neil | Arthur | 1823 |
| O'Neil | Arthur | |
| O'Neil | Arthur [G.?] | 1852 |
| O'Neil | Arthur G. | |
| O'Neil | Bridget | 1840 |
| O'Neil | Catharine | 1836 |
| O'Neil | Catharine | 1859 |
| O'Neil | Charles | 1829 |
| O'Neil | Charles | 1851 |
| O'Neil | Charles | 1852 |
| O'Neil | Charles | 1868 |
| O'Neil | Charles | |
| O'Neil | Charles J. | 1853 |
| O'Neil | Cornelius | |
| O'Neil | Dennis | |
| O'Neil | Edward | 1847 |
| O'Neil | Elizabeth I. | |
| O'Neil | Ellen | 1843 |
| O'Neil | Emma | |
| O'Neil | Francis | 1854 |
| O'Neil | Francis | 1854 |
| O'Neil | Francis | |
| O'Neil | Frank | 1870 |
| O'Neil | George | 1855 |
| O'Neil | George | 1883 |
| O'Neil | George | |
| O'Neil | Henry | 1858 |
| O'Neil | Henry | |
| O'Neil | Hugh | 1849 |
| O'Neil | Hugh | 1849 |
| O'Neil | Hugh | |
| O'Neil | James | 1845 |
| O'Neil | James | 1854 |
| O'Neil | James | 1855 |
| O'Neil | James | 1847 |
| O'Neil | James | 1820s-30s |
| O'Neil | James | 1844 |
| O'Neil | James | 1870 |
| O'Neil | James | 1868 |
| O'Neil | James | 1898 |
| O'Neil | James | |
| O'Neil | Joanna | 1838 |
| O'Neil | John | 1853 |
| O'Neil | John | 1850 |
| O'Neil | John | 1852 |
| O'Neil | John | 1852 |
| O'Neil | John | 1847 |
| O'Neil | John | 1848 |
| O'Neil | John | 1849 |
| O'Neil | John | 1851 |
| O'Neil | John | 1854 |
| O'Neil | John | 1860 |
| O'Neil | John | 1867 |
| O'Neil | John | 1868 |
| O'Neil | John | 1872 |
| O'Neil | John | 1869 |
| O'Neil | John | |
| O'Neil | John | 1853 |
| O'Neil | John Alexander | |
| O'Neil | Joseph | |
| O'Neil | Julia | 1842 |
| O'Neil | Lewis | |
| O'Neil | Louis | |
| O'Neil | Maggie | 1857 |
| O'Neil | Margaret | 1858 |
| O'Neil | Margaret | 1853 |
| O'Neil | Margaret | 1852 |
| O'Neil | Margaret A. | |
| O'Neil | Mary | 1872 |
| O'Neil | Mary | |
| O'Neil | Mary Jane | |
| O'Neil | Mathew | 1852 |
| O'Neil | Owen | 1855 |
| O'Neil | Patrick | 1848 |
| O'Neil | Patrick | 1834 |
| O'Neil | Patrick | 1872 |
| O'Neil | Patrick | |
| O'Neil | Peter | 1850 |
| O'Neil | Peter | 1864 |
| O'Neil | Peter | 1872 |
| O'Neil | Peter | |
| O'Neil | Peter, Jr. | |
| O'Neil | Philip | 1879 |
| O'Neil | Robert | 1865 |
| O'Neil | Sarah Jane | 1837 |
| O'Neil | Terrence | 1846 |
| O'Neil | Terrence | |
| O'Neil | Terry | 1862 |
| O'Neil | Thomas | 1848 |
| O'Neil | Thomas | 1827 |
| O'Neil | Thomas | 1841 |
| O'Neil | Thomas | 1871 |
| O'Neil | Thomas | 1868 |
| O'Neil | Timothy | 1852 |
| O'Neil | Timothy | 1861 |
| O'Neil | William | 1841 |
| O'Neil | William | 1844 |
| O'Neil | William | 1854 |
| O'Neil | William | 1862 |
| O'Neil | William | 1861 |
| O'Neil | William | 1869 |
| O'Neil | William | |
| O'Neil | William J. | 1858 |
| O'Neil | William J. | |
| O'Neil | Margaret | 1880 |
| O'Neil alias David Cuningham | John | 1866 |
| O'Neil alias John O'Brien | James | |
| O'Neil alias William Linderman | James | 1862 |
| O'Neill | Charles | |
| O'Neill | Dennis | |
| O'Neill | Edward | 1858 |
| O'Neill | Emma | |
| O'Neill | Frank | 1889 |
| O'Neill | Frank W. | |
| O'Neill | George | |
| O'Neill | James | 1854 |
| O'Neill | James | 1854 |
| O'Neill | James | 1868 |
| O'Neill | John | 1825 |
| O'Neill | John | 1855 |
| O'Neill | John | 1855 |
| O'Neill | John | |
| O'Neill | John A. | |
| O'Neill | John A. | |
| O'Neill | John Michael | |
| O'Neill | Joseph | 1881 |
| O'Neill | Luke | 1899 |
| O'Neill | Mary E. | |
| O'Neill | Michael J. | |
| O'Neill | Owen | |
| O'Neill | Peter | 1854 |
| O'Neill | Terrance | |
| O'Neill | Terrence | |
| O'Neill | William | 1893 |
| Onesto alias Gamboney | Daniel | 1881 |
| Oney | Ruth | 1832 |
| O'Niel | Francis | 1829 |
| O'Niel | James | 1837 |
| O'Niel | Terence | |
| O'Niel aka O'Neill | Jeremiah | 1865 |
| Onksen | Frederick | |
| Onksen | George | |
| Onley | George | 1873 |
| Onody | Julius | 1908 |
| Onody | Julius | |
| Onody | William | |
| Onofretti | Richard | 1943 |
| Ontico | Joseph | 1900 |
| Ooef? | No first name given | |
| Ooumeyer | Henry | 1854 |
| Opdenbrow | Henry D. | 1866 |
| Opdyke | George | 1851 |
| Opdyke | George | |
| Opdyke | George W. | 1851 |
| Opdyke | George W. | |
| Opdyke | Joseph | 1852 |
| Opdyke | Joseph | |
| Opdyke | Joseph N. | 1853 |
| Opdyke | Joseph N. | |
| Opdyke | Joseph W. | |
| Openheimer | Julius | 1852 |
| Opfer | Charles | |
| Ophrrow aka Ebron | Joseph E. | 1901 |
| Opiso | Manuel | 1887 |
| Opitz | Charles | 1909 |
| Oppedisano | Ernest | 1911 |
| Oppenberg | Isadore | |
| Oppenheim | Isidore | 1896 |
| Oppenheim | Louis | |
| Oppenheimer | Harris | |
| Oppenheimer | Henry | |
| Oppenheimer | Jacob | |
| Oppenheimer | Martha | 1869 |
| Oppenheimier | Harris | |
| Oppenhinner | Jacob | |
| Opper | Frederick | |
| Opperman | Harry | 1897 |
| Opperman | Henry | |
| Opperman | Henry, Jr. | |
| Opperman | John | |
| Opperman | William H. | |
| Oppermann | Henry | |
| Oppermann | Louis | |
| Oppermann | Louis H. | |
| Oppido | Amadio | |
| Oppido | Amedeo | |
| Oppido | Ermimina? | |
| Oppido | Erminia? | |
| Oppold | Francis | |
| O'Pray | Hugh | 1883 |
| Opronolla | Donato | |
| O'Ralph | Alice | |
| Orange | Harold | |
| Orapello | Frank | 1901 |
| Orbel | Edward A. | |
| Orbel | Edward A., Jr. | |
| Orbel | Godfrey | |
| Orchard | James H. | 1857 |
| Orchard | Mary E. | 1838 |
| Orchinsky | Max | |
| Orcinoli | Sebastian | 1896 |
| Orcinolo or Ocinolo | James | 1915 |
| Orcout | Thomas | 1846 |
| Orcout | Thomas | |
| Orcutt | Thomas | |
| Ore | Alfred G. | |
| Orefice | Sam | 1914 |
| O'Reiley or O'Riley | Patrick | 1849 |
| O'Reilley | David | 1859 |
| O'Reilley alias Dennis O'Connell | Thomas | 1853 |
| O'Reilly | Bernard | 1874 |
| O'Reilly | James | |
| O'Reilly | Miles | 1867 |
| O'Reilly | Peter | 1870 |
| O'Reilly | William | 1899 |
| O'Reilly alias Reilly | Frank | |
| O'Reilly alias Riley | Christopher | 1901 |
| O'Reilly or O'Reiley | James | |
| O'Reily | Jeremiah | 1850 |
| Orell | Benjamin | |
| Orenstein | Jacob | |
| Orenstein | Louis | 1887 |
| Orenstein | Louis | |
| Orenstein | Morris | 1890 |
| Orf | Henry | |
| Organ | Joanna | 1838 |
| Orgen or Organ | Jacob | 1901 |
| Orginsky | Samuel | |
| O'Rielly | James | |
| Orien | Louis | |
| O'Riley | Catharine | 1834 |
| O'Riley | James | 1864 |
| O'Riley | James | 1860 |
| O'Riley | James | |
| O'Riley | Joseph | 1849 |
| O'Riley | Joseph | |
| O'Riley | Thomas | |
| O'Rilley | Patrick | 1855 |
| Orkfys | Roman | 1899 |
| Orlander | Max | |
| Orlando | Carmela | 1900 |
| Orlando | George | 1899 |
| Orlando | Mattea | |
| Orlando | Raphael | 1900 |
| Orlando | Salvatore | 1907 |
| Orlando | Vincenzo | |
| Orley | John | 1854 |
| Orliner | Max | 1879 |
| Orlove | Morris | |
| Orman aka Orwan | Adolph | 1880 |
| Ormand | Josephine | |
| Ormand | Mary | |
| Ormand | William | 1854 |
| Ormerod alias Eddie Plew | Conrad | 1877 |
| Ormerod alias Willie Plew | William | 1879 |
| Orminski | Louis Joseph | 1913 |
| Ormond | Warren | 1897 |
| Ormsby | Joseph | 1844 |
| Ormsly or Ormsby | George | 1862 |
| Ormsly or Ormsby | George | Late 1850s-early 1860s |
| Ornz | Herman | 1860 |
| O'Roerke? | John F. | |
| Oromiano | Aser | |
| Oromiano or Opomiano? | Aser | |
| O'Rorke | Bernard | 1852 |
| O'Rorke | Patrick | 1850 |
| O'Rouke | Emiline | |
| O'Rouke | John F. | |
| O'Rouke | Stephen | 1874 |
| O'Rourk | John | 1852 |
| O'Rourk | John | |
| O'Rourk | Patrick | 1849 |
| O'Rourk | Patrick | |
| O'Rourke | Barnard | 1816 |
| O'Rourke | Bernard | 1844 |
| O'Rourke | Bernard | 1876 |
| O'Rourke | Bridget | 1851 |
| O'Rourke | Christopher | 1860 |
| O'Rourke | Dennis | 1855 |
| O'Rourke | Edward | 1867 |
| O'Rourke | Emeline | 1849 |
| O'Rourke | Francis | 1843 |
| O'Rourke | Frank | 1865 |
| O'Rourke | Henry | 1869 |
| O'Rourke | James | 1881 |
| O'Rourke | John | 1854 |
| O'Rourke | John | 1857 |
| O'Rourke | John | 1862 |
| O'Rourke | John | 1878 |
| O'Rourke | John | |
| O'Rourke | Mary | 1839 |
| O'Rourke | Mary Ann | |
| O'Rourke | Patrick | 1820s-30s |
| O'Rourke | Thomas | 1850 |
| O'Rourke | Thomas | 1869 |
| O'Rourke | Thomas | 1875 |
| O'Rourke | Thomas | 1896 |
| O'Rourke | William | 1838 |
| O'Rourke | William | 1861 |
| O'Rourke | William | 1863 |
| O'Rourke alias John Hartigan | James | 1846 |
| O'Rourke alias Rowe | Michael | 1853 |
| Orphal | Annie | 1889 |
| Orpin | Charles | 1855 |
| Orpin | Charles | |
| Orpin | David | 1848 |
| Orpin | David | |
| Orr | Alexander | |
| Orr | Arthur | 1815 |
| Orr | Benjamin | |
| Orr | Benjamin A. | |
| Orr | Daniel | 1851 |
| Orr | Daniel | |
| Orr | David | |
| Orr | George | |
| Orr | Henry | 1882 |
| Orr | James | 1847 |
| Orr | James | 1838 |
| Orr | James | |
| Orr | John | 1850 |
| Orr | John | 1849 |
| Orr | John C. | 1849 |
| Orr | John C. | |
| Orr | Nellie | 1882 |
| Orr | Samuel | 1880 |
| Orr | William | |
| Orrell | Alexander | 1890 |
| Orrico | Alex | |
| Orrico | Alexander | |
| Orrico | Carlos | |
| Orrico | Louise | |
| Orsano | Samuel | 1903 |
| Orsini | Tony | 1892 |
| Ortell | Jacob | 1842 |
| Orth | John | |
| Orth | Louis | 1865 |
| Orth | Louis | |
| Orth | Peter | 1829 |
| Ortiz | Dimas | 1914 |
| Ortiz | Felix Jesus | 1937 |
| Ortiz | Louis | 1921 |
| Ortner | Charles | 1901 |
| Ortolani | Victor | 1905 |
| Ortolera | Giovanni | |
| Ortolera | Sophia | |
| Ortolera | Vincenzo | |
| Ortutay | Alexander | 1900 |
| Ortutay | Edward | 1901 |
| O'Ruke? | John F. | |
| Orvel or Ornel? | Isaac | |
| Orvin | Henry | |
| Osa | David | |
| Osa | Edward | |
| Osa | Joseph | |
| Osban | Andrew | 1820s-30s |
| Osberg | John | |
| Osborn | Adalade | 1853 |
| Osborn | Adalade | |
| Osborn | Alice | 1835 |
| Osborn | Benjamin | 1825 |
| Osborn | Henry | 1834 |
| Osborn | Isabella | |
| Osborn | James | |
| Osborn | John | |
| Osborn | Mary Ann | 1844 |
| Osborne | Adelaide | |
| Osborne | Charles | |
| Osborne | David F. | |
| Osborne | Eloise | 1856 |
| Osborne | Harry | |
| Osborne | Isabella | 1847 |
| Osborne | Isabella | |
| Osborne | Miller | 1849 |
| Osborne | Oscar | |
| Osborne | Patrick | 1820s-30s |
| Osborne | Sarah | 1826 |
| Osborne | Sarah M. | |
| Osborne | Thomas | 1844 |
| Osborne | Thomas | |
| Osborne | William J. | |
| Osceta | Edward | 1912 |
| O'Schatz | Frederick | |
| O'Schiefle | Auguste | 1840 |
| Osenenko alias Smolokoff | Joseph | 1917 |
| Oser | Frank | 1877 |
| Oser | Frank | |
| Oser alias Olson | Thomas | 1900 |
| Oshansky | Abraham | 2904 |
| Oshansky | Abraham | |
| Oshansky | Meyer | 1892 |
| O'Shaughnessey | Martin | 1845 |
| O'Shaughnessy | Michael J. | |
| O'Shaughnessy | Terence | 1879 |
| O'Shaughnessy | William | 1880 |
| O'Shay | Charles | |
| O'Shea | Bernard | 1903 |
| O'Shea | Francis | 1848 |
| O'Shea | Francis | |
| O'Shea | Francis | 1848 |
| O'Shea | Henry | 1861 |
| O'Shea | John | 1843 |
| O'Shea | Timothy | 1851 |
| O'Shea | Walter | 1910 |
| Oshinsky | Philip | 1870 |
| Oshrin | Samuel | 1877 |
| Osiecki | Frank | 1898 |
| Osier | Jeremiah | 1820s-30s |
| Osika | John J. | 1905 |
| Osley | John | 1855 |
| Osley | John | 1854 |
| Osley | John | |
| Oslup | John | |
| Osnato | Nicola | |
| Osnato alias Morano | Michael | 1886 |
| Ossuch | Andrew | |
| Ost | Harry | |
| Oste | Victor | 1874 |
| Oster | Joseph | 1887 |
| Oster | William | |
| Osterhammer | Paul | |
| Osterhant | Carmon | |
| Osterheld | Lizzie | 1860s |
| Osterhoudt | Jacob | 1862 |
| Ostermeyer | Charles | 1872 |
| Ostermeyer | John | 1871 |
| Ostra | Jacob, Jr. | |
| Ostrander | Lotta aka Lottie | 1878 |
| Ostrander | Louis | 1866 |
| Ostrich | Rosalia | 1871 |
| Ostrom | Elizabeth | 1876 |
| Ostrom | Howard | 1873 |
| Ostroska | Leo | 1883 |
| Oswald | August | 1884 |
| Oswald | Daniel | 1834 |
| Oswald | John | |
| Otenhifer | Henry | 1855 |
| Otis | James W. | 1834 |
| Otis | William | 1853 |
| O'Toole | Charles | 1883 |
| O'Toole | Edward | 1886 |
| O'Toole | Margaret | 1820s-30s |
| O'Toole | Patrick | 1853 |
| O'Toole | Patrick | 1866 |
| O'Toole | Patrick | |
| O'Toole | Patrick | 1854 |
| O'Toole | William, Jr. | 1876 |
| O'Toul | Patrick | 1853 |
| O'Toule | Patrick | |
| Ott | Annie | |
| Ott | Caroline | |
| Ott | Charles | 1878 |
| Ott | Frank | |
| Ott | Fred | 1888 |
| Ott | George | 1846 |
| Ott | Henry | |
| Ott | James | |
| Ott | James alias John | 1854 |
| Ott | James alias John | |
| Ott | John | |
| Ott | Mamie | |
| Ott | Maurie or Mamie? | |
| Ott | John | 1862 |
| Ott or Olt? | Caroline | |
| Ottajano | Paschal | 1860 |
| Ottan | George | |
| Ottan | John | |
| Otten | Frank A. | |
| Otten | George | |
| Otten | Herman | 1872 |
| Otten | John | |
| Ottenberg | Henry | 1854 |
| Ottenberg | Henry | 1852 |
| Ottenberg | Henry | |
| Ottenberg | Joseph | 1855 |
| Ottenberg | Joseph | 1857 |
| Ottenberg | Joseph | |
| Ottenberry | Joseph | |
| Ottenburg | Henry | |
| Ottenburg | Joseph | |
| Ottenburgh | Henry | 1850 |
| Ottenburry | Joseph | |
| Otterson alias Addison | Mary | 1862 |
| Ottine | Philip | |
| Ottinger | Joseph | 1862 |
| Ottley | Ernest | |
| Ottlinger | Francesca or Fredericka | 1824 |
| Otto | Albert | 1850 |
| Otto | Albert | |
| Otto | August | 1893 |
| Otto | Charles | 1907 |
| Otto | Conrad | |
| Otto | Edward | |
| Otto | Elizabeth | 1856 |
| Otto | Frank | 1891 |
| Otto | George | 1855 |
| Otto | Gustave | 1874 |
| Otto | Henry | |
| Otto | Hortense | 1894 |
| Otto | John | |
| Otto | Joseph | |
| Otto | Louis | |
| Otway | Ernest | 1865 |
| Otzel | Catherine | |
| Ouimette | Edward | 1904 |
| Ouksen | Frederick | |
| Ousteen | Charles | |
| Outenwalder | Mary C. | |
| Outhouse | Clarence | 1870 |
| Outhout | Thomas | 1863 |
| Outler | George | 1860 |
| Outmans | Manila | 1898 |
| Outtler | George E. | |
| Outtler? | George E. | |
| Ovenden | Louisa | |
| Overacker | Frederick | |
| Overbough | Harry | 1886 |
| Overby or Overly | William Van Duyne | 1878 |
| Overend | John | 1814 |
| Overhullse | Benjamin | |
| Overin | Ellen | |
| Overin | Millie | |
| Overlander | Charles | 1842 |
| Overlander | Frederick | 1850 |
| Overlander | Frederick | 1850 |
| Overlander | Frederick | 1850 |
| Overlander | Frederick | |
| Overocker | Frederick | |
| Overrider | Anthony | 1823 |
| Oversecker? | Frederick | |
| Overt | George A. | 1882 |
| Overton | George | |
| Overton | Horace | 1848 |
| Overton | Jessie | |
| Overton | Martha | 1843 |
| Overton | Martha | |
| Overton | Martha G. | |
| Overton | Martha Grace | |
| Overton | Samuel J. | 1873 |
| Overton | William | 1914 |
| Overton aka Elmer Henley | Frank | 1895 |
| Overtt | Evertt | |
| Ovid | Allan | |
| Ovils alias James Daley | Robert | 1903 |
| Ovington | Edward | 1896 |
| Ovitch | Abraham | |
| Owczarzak | Lawrence | 1916 |
| O'Welson alias William H. Anderson | Henry | 1826 |
| Owen | Bernard | 1863 |
| Owen | Bertha | 1873 |
| Owen | Cadwalader | |
| Owen | Cadwallader | |
| Owen | Carol Anne | 1931 |
| Owen | Charles H. | |
| Owen | Elizabeth | 1846 |
| Owen | Francis | |
| Owen | George | |
| Owen | James | 1837 |
| Owen | John | 1826 |
| Owen | John | |
| Owen | John E. | |
| Owen | Nicholas | 1843 |
| Owen | Oliver P. | |
| Owen | Peter J. | 1862 |
| Owen | William | 1848 |
| Owen | William | |
| Owen | Cadwallader | 1851 |
| Owen alias Whitney | Alfred | 1835 |
| Owen alias Whitney | Samuel | 1839 |
| Owens | Ann Maria | 1846 |
| Owens | Annie | 1876 |
| Owens | Cadwalader or Cadwallider | |
| Owens | Cadwallader | 1850 |
| Owens | Cadwallader | |
| Owens | Catharine | |
| Owens | Catherine | 1851 |
| Owens | Catherine | |
| Owens | Charles | 1849 |
| Owens | Charles | 1867 |
| Owens | Charles | |
| Owens | Charles H. | |
| Owens | Daniel | 1844 |
| Owens | David | |
| Owens | David J. | |
| Owens | Edward | |
| Owens | Elizabeth | |
| Owens | Esther Ann | 1843 |
| Owens | Fred | 1908 |
| Owens | George W. | 1860 |
| Owens | Harry | 1870 |
| Owens | Herman | 1855 |
| Owens | Herman | |
| Owens | Ida | |
| Owens | John | 1857 |
| Owens | John | 1848 |
| Owens | John | 1860 |
| Owens | John | 1868 |
| Owens | John | 1867 |
| Owens | John | |
| Owens | Lizzie | |
| Owens | Michael | 1860 |
| Owens | Richard | 1852 |
| Owens | Richard | 1852 |
| Owens | Richard | |
| Owens | Sarah Jane | 1827 |
| Owens | Sarah Jane | |
| Owens | Sarepta | |
| Owens | Serepta | |
| Owens | Spencer | |
| Owens | Thomas | 1855 |
| Owens | Thomas | 1848 |
| Owens | Thomas | 1853 |
| Owens | Thomas | 1895 |
| Owens | Thomas | |
| Owens | William | 1856 |
| Owens | William | 1884 |
| Owens aka Owen | Lotta aka Charlotte | 1851 |
| Oxford | Alice | |
| Oxford | George | |
| Oxford | John | |
| Oxford | Lizzie | |
| Oxford | Maria | |
| Oxhadler | Edward | |
| Oysterman | Lewis | |
| Ozimek | Joseph | 1916 |
| Last Name | First Name | Year of Birth (Approx.) |
| O'Brien | Maria | 1833 |
| O'Neil | Mary | 1840 |
| O'Neil | Bridget | 1843 |
| O'Brien | Mary | |
| Osborn | Alice C. | 1836 |
| Orr | Elizabeth J. | 1843 |
| Orr | Robert J. | 1846 |
| Osborn | Sarah L. | 1852 |
| O'Brien | Julia | 1846 |
| Oakley | John H. | 1845 |
| O'Callaghan | Mary E. | 1846 |
| O'Callaghan | Eliza | 1849 |
| O'Neil | Phebe E. | 1850 |
| O'Neil | Margaret | 1852 |
| O'Neil | James | 1854 |
| Oliver | Ann E. | 1844 |
| O'Neil | Daniel | 1846 |
| O'Brien | Eliza | 1850 |
| O'Brien | Ann | 1854 |
| O'Neil | John | 1855 |
| O'Brien | Catherine | 1851 |
| Oakey | Helen | 1857 |
| O'Neil | Eliza | 1854 |
| O'Neil | Catherine | 1857 |
| O'Reilly | Lucinda | 8151 |
| O'Reilly | Thomas | 1854 |
| O'Brien | Sarah A. | 1854 |
| Olmsted | Jessie C. | 1857 |
| O'Brien | Margaret | 1855 |
| Ogden | Frances R. | 1855 |
| O'Brien | William | 1858 |
| Odell | John | 1847 |
| O'Donnell | Mary A. | 1858 |
| Otto | Alexander C. | 1856 |
| O'Donnell | Catherine | 1848 |
| O'Brien | Francis | 1860 |
| O'Brien | Anna M. | 1860 |
| Oakley | Agnes | 1860 |
| O'Neill | George | 1860 |
| O'Donnell | James H. | 1861 |
| Osborn | Frances | 1857 |
| Ogden | William B. | 1856 |
| Owen | Elizabeth | 1856 |
| Oneker | Christopher | 1856 |
| Odell | Charles H. | 1862 |
| Otten | Edith | 1862 |
| Olson | Rosanna C. C. | 1857 |
| Olson | Henry T. S. | 1863 |
| Olson | Susanna K. | 1869 |
| O'Connelly | Jennie | 1869 |
| Odell | Laura E. | 1861 |
| Odell | Ada A. | 1859 |
| Osborn | Nora O. | 1871 |
| O'Vaney | Alice | 1869 |
| Orr | William | 1873 |
| O'Brien | Mary J. | 1870 |
| Ober | Mary | 1867 |
| Ober | Caroline | 1873 |
| O'Hearne | Josephine | 1871 |
| O'Hearne | James | 1869 |
| O'Neill | Maggie | 1874 |
| Osborn | John E. | 1875 |
| Oliver | Mary A. | 1874 |
| O'Connel | Margaret | 1867 |
| O'Rourke | Rosa | 1866 |
| Osborn | Maud I. | 1876 |
| Osborn | Daisy F. | 1877 |
| O'Hara | Augusta | 1878 |
| Offinger | Adaline | 1879 |
| Oldrin | Willis G. | 1877 |
| Osterberg | Amy | 1871 |
| Ostrander | Harry Slade | 1880 |
| Orr | Fannie | 1868 |
| Orr | Isabella | 1879 |
| Olson | Minnie | 1871 |
| Olson | Elma | 1876 |
| Olson | Louis | 1879 |
| Oberlin | Mary L. | 1876 |
| Oliver | Florence | 1870 |
| Ordner | Ella F. | 1884 |
| Oglebee | Harry | 1881 |
| Olsen | Augusta S. | 1884 |
| Ovens | George | 1883 |
| O'Rourke | Mary | 1877 |
| Olsen | Albert or Nelson | 1887 |
| Oesterling | Max | 1888 |
| Oesterling | Kate | 1885 |
| Oesterling | Dora | 1887 |
| Oesterling | William | 1890 |
| Oesterling | Charles | 1891 |