| Name | Birth date | Relationship with Marian Yancey |
| Darek, Janina | | Wife of the 4th cousin twice removed |
| Davis, Andrew James | | Grandson |
| Davis, Elaine Suzanne | | 2nd cousin once removed of the husband |
| Davis, Gregory Alan | | 2nd cousin once removed of the husband |
| Davis, Harold Junior | | 2nd cousin of the husband |
| Davis, Heidi Kae | | 2nd cousin twice removed of the husband |
| Davis, Helaine Marie | | 2nd cousin twice removed of the husband |
| Davis, Kathleen May | | 2nd cousin once removed of the husband |
| Davis, Kimberly Margaret | | 2nd cousin once removed of the husband |
| Davis, Melanie May | | 2nd cousin twice removed of the husband |
| Davis, Michael Arthur | | 2nd cousin once removed of the husband |
| Davis, Monica Lynn | | 2nd cousin twice removed of the husband |
| Davis, Patrick James | | Ex-husband of the daughter |
| Davis, Ralph Hershel | January 19, 1928 | 2nd cousin of the husband |
| Davis, Robert Lester | | 2nd cousin once removed of the husband |
| De Vaux, ??? | | 2nd cousin once removed of the husband |
| De Vaux, Bill | | 1st cousin twice removed of the husband |
| De Vaux, Richard J. | | 3rd cousin of the husband |
| Dechambeau, Violet Gretta | October 12, 1906 | Wife of the grandfather |
| Demar, Gene | | 1st cousin once removed of the husband |
| Demar, Lindsay | | 1st cousin once removed of the husband |
| Depner, Anna | July 22, 1891 | Wife of the 4th cousin twice removed |
| Dertinger, David Charles | | Husband of the niece |
| Di Giorgio, Christopher Joseph | | 6th cousin twice removed |
| Di Giorgio, Lawrence | | Husband of the 6th cousin once removed |
| Dichovan, Eugene | | Husband of the 6th cousin |
| | | Husband of the 6th cousin once removed |
| Dichovan, Kelsey | | 6th cousin once removed |
| | | 6th cousin twice removed |
| Dillon, John | Abt. 1868 | 1st cousin twice removed of the husband |
| Dillon, Mary E. | Abt. 1869 | 1st cousin twice removed of the husband |
| Dillon, William | Abt. 1867 | 1st cousin twice removed of the husband |
| Dissler, Margaret Gertrude | September 28, 1894 | Wife of the granduncle |
| Dolega, Antoni | January 14, 1813 | 1st cousin 4 times removed |
| Dolega, Franciszek | 1789 | Husband of the 3rd great-grandaunt |
| Dolega, Jan | October 10, 1810 | 1st cousin 4 times removed |
| Dolega, Józef | February 28, 1820 | 1st cousin 4 times removed |
| Dolegowska, Józefa | February 23, 1849 | 2nd cousin 3 times removed |
| Dolegowska, Julianna | May 20, 1817 | 1st cousin 4 times removed |
| Dolegowski, Kazimierz | February 17, 1815 | 1st cousin 4 times removed |
| Donegan, Gerald | | Husband of the 6th cousin |
| | | Husband of the 6th cousin once removed |
| Donofrio, Maria | | Wife of the 6th cousin |
| Downs, Mary | Abt. 1730 | 6th great-grandmother of the husband |
| Dragan, Ewa | | Wife of the 4th cousin once removed |
| Duncan, ??? | | 2nd cousin of the husband |
| Duncan, Brett L. | | 2nd cousin of the husband |
| Duncan, Bryan C. | | 2nd cousin of the husband |
| Duncan, Carolyn | | 2nd cousin of the husband |
| Duncan, Clyde | January 13, 1916 | 1st cousin once removed of the husband |