| Name | Relationship with Thomas Marsteller | Civil | Canon |
| Generalovich, Milosh | Husband of the 3rd cousin | | |
| Generalovich, Tami | 3rd cousin once removed | IX | 5 |
| Gollar | Husband of the 2nd cousin once removed | | |
| Grace, Mary | Wife of the 1st cousin twice removed | | |
| Grossman, Elizabeth | 6th great-grandmother | VIII | 8 |
| Gundy, Benjamin | 1st cousin 3 times removed | VII | 5 |
| Gundy, Eletha | 1st cousin 3 times removed | VII | 5 |
| Gundy, Jacob | 1st cousin 3 times removed | VII | 5 |
| Gundy, John | 1st cousin 3 times removed | VII | 5 |
| Gundy, John Peter | Husband of the 2nd great-grandaunt | | |
| Gundy, Louisa | 1st cousin 3 times removed | VII | 5 |
| Gundy, Mary Ann | 1st cousin 3 times removed | VII | 5 |
| Gundy, Peter | 1st cousin 3 times removed | VII | 5 |
| Gundy, Robert Emmett | 1st cousin 3 times removed | VII | 5 |
| Halliday, Mary Mingus | Wife of the 1st cousin twice removed | | |
| Harmon, Francis Gertrude | Wife of the 2nd cousin once removed | | |
| Harrington, Kris | Wife of the grandnephew | | |
| Harshman, Charles | 2nd cousin once removed | VII | 4 |
| Harshman, Joseph Clair | 2nd cousin once removed | VII | 4 |
| Harshman, Kenneth Bruce | 2nd cousin once removed | VII | 4 |
| Harshman, Lester | Husband of the 1st cousin twice removed | | |
| Harshman, Ralph | 2nd cousin once removed | VII | 4 |
| Hart, Joseph | Husband of the 4th cousin | | |
| Hawthorne, Myrtle | Wife of the 2nd cousin once removed | | |
| Hazlett, Dale | 4th cousin once removed | XI | 6 |
| Hazlett, Gerald | 4th cousin once removed | XI | 6 |
| Hazlett, Ralph | Husband of the 4th cousin | | |
| Heim, Charles Michael | Husband of the 2nd cousin once removed | | |
| Helewa, George Mather Yusef | Husband of the 1st cousin once removed | | |
| Helm, Christopher | Husband of the grandniece | | |
| Helm, Christopher | Husband of the grandniece | | |
| Helm, Jackson Nelson | Great-grandnephew | V | 4 |
| Helm, Jackson Nelson | Great-grandnephew | V | 4 |
| Henderson, Evelyn A. | Wife of the 4th cousin | | |
| Henning, Harold | Husband of the 2nd cousin once removed | | |
| Hess, John | Husband of the 2nd cousin 4 times removed | | |
| Hoagland, Chad Edward | 3rd cousin twice removed | X | 6 |
| Hoagland, Donna May | 3rd cousin once removed | IX | 5 |
| Hoagland, Edward W. | Husband of the 3rd cousin | | |
| Hoagland, Edward W. III | 3rd cousin once removed | IX | 5 |
| Hoagland, Melissa Lyn | 3rd cousin once removed | IX | 5 |
| Hoagland, Robert Alan | 3rd cousin once removed | IX | 5 |
| Hoagland, Shelby Lynn | 3rd cousin twice removed | X | 6 |
| Hoovier, Kathleen Joann | Wife of the 3rd cousin once removed | | |
| Hoppe, Suzanne | 5th great-grandmother | VII | 7 |
| Hulburt, ? | Husband of the 1st cousin once removed | | |
| Humphrey, Charlotte | Wife of the 2nd cousin once removed | | |
| Hutcheson, Sara Jane | Wife of the great-granduncle | | |
| Irving, Grace | Wife of the 2nd cousin once removed | | |
| Jackson, Dolores | Sister-in-law | | |