| Name | Birth date | Relationship with Marian Yancey |
|---|
| Obidowski, Andrzej | October 03, 1877 | 2nd cousin twice removed |
| Obidowski, Felix | November 19, 1881 | 2nd cousin twice removed |
| Obidowski, Ignacy | September 19, 1888 | 2nd cousin twice removed |
| Obidowski, Ignacy | June 06, 1890 | 2nd cousin twice removed |
| Obidowski, Jan | January 16, 1852 | 1st cousin 3 times removed |
| Obidowski, Jan | January 28, 1888 | 2nd cousin twice removed |
| Obidowski, Józef | March 14, 1822 | Husband of the 2nd great-grandaunt |
| Obidowski, Józef | October 27, 1878 | 2nd cousin twice removed |
| Obidowski, Stanislaw | November 08, 1884 | 2nd cousin twice removed |
| Obidowski, Teodor | January 16, 1887 | 2nd cousin twice removed |
| Obidowski, Tomasz | December 14, 1857 | 1st cousin 3 times removed |
| Obidowski, Wojciech | March 28, 1880 | 2nd cousin twice removed |
| Obidowski, Zofia | May 13, 1885 | 2nd cousin twice removed |
| Obidowski, Zygmunt | December 26, 1890 | 2nd cousin twice removed |
| O'bringer, Richard | | 2nd cousin once removed of the husband |
| O'bringer, Tracy Lynn | | 2nd cousin once removed of the husband |
| Okuniewicz, Edward | | Husband of the 5th cousin once removed |
| | | Husband of the 6th cousin |
| Okuniewicz, Edward | | 6th cousin |
| | | 6th cousin once removed |
| Okuniewicz, Margaret | | 6th cousin |
| | | 6th cousin once removed |
| Olejniczak, Ludwika | May 24, 1858 | Wife of the 1st cousin 3 times removed |
| Olejniszak, Maryanna | 1859 | Wife of the half 2nd cousin 4 times removed |
| Oliwa, Janina | | Wife of the 3rd cousin once removed |
| | | Wife of the 5th cousin once removed |
| Olwell, Cameron James | | Half 1st cousin 3 times removed of the husband |
| Olwell, Matthew Karl | | Half 1st cousin 3 times removed of the husband |
| Olwell, Patrick Ryan | | Half 1st cousin 3 times removed of the husband |
| O'Mullane, Maegan Ann | | Half 1st cousin 3 times removed of the husband |
| Osborn, John | Abt. 1690 | 7th great-grandfather of the husband |
| Osborn, John | Abt. 1722 | 6th great-granduncle of the husband |
| Osborn, Susannah | February 24, 1719/20 | 6th great-grandmother of the husband |
| Osborn, William | Abt. 1724 | 6th great-granduncle of the husband |
| Owen, William George | April 13, 1863 | Granduncle of the husband |
| Owens, David | | 3rd cousin of the husband |
| Owsik, Antonina | January 01, 1889 | 5th cousin once removed |
| Owsik, Augustyn | | 3rd great-grandfather |
| Owsik, Charlie | | Half 1st cousin once removed |
| Owsik, Franciszek | | Husband of the grandaunt |
| Owsik, Franciszka | April 09, 1830 | 2nd great-grandmother |
| Owsik, Franciszka | November 23, 1889 | 5th cousin once removed |
| Owsik, Frank | | Half 1st cousin once removed |
| Owsik, Ignacy | February 01, 1892 | 5th cousin once removed |
| Owsik, Jadwiga | December 08, 1862 | Wife of the 4th cousin twice removed |
| Owsik, Jan | August 13, 1859 | Husband of the 4th cousin twice removed |
| Owsik, Jane | | Half 1st cousin once removed |
| Owsik, John | | Half granduncle |
| Owsik, Józefa | March 18, 1885 | 5th cousin once removed |
| Owsik, Jules | | Half 1st cousin once removed |
