| Name | Relationship with Wendy Libby | Civil | Canon |
|---|
| Mann, Mary | Wife of the 5th cousin 5 times removed | | |
| Manning, Hannah | Wife of the 2nd cousin 7 times removed | | |
| March, Millie P. | Wife of the 5th cousin 3 times removed | | |
| Marchant | Husband of the 4th great-grandmother | | |
| Maria | Wife of the 3rd cousin 4 times removed | | |
| Marom, Josephine Emeline | Wife of the 4th cousin 4 times removed | | |
| Marrah, Sarah Ceala | Wife of the 5th cousin 3 times removed | | |
| Marsh, William, Jr. | Husband of the 5th cousin 4 times removed | | |
| Marshall, Charles, Jr. | Husband of the 5th cousin 3 times removed | | |
| Martha | Wife of the 5th cousin 5 times removed | | |
| Martin | Husband of the 2nd cousin 7 times removed | | |
| Martin, Melba | Wife of the 7th cousin twice removed | | |
| Martindale, Huldah Smith | Wife of the 5th cousin 5 times removed | | |
| Mary | Wife of the 1st cousin 8 times removed | | |
| Mary | Wife of the 1st cousin 7 times removed | | |
| Mason, Ruth G. | Wife of the granduncle | | |
| Mason, Weston | Husband of the grandmother | | |
| Masten, J.S. | Husband of the 4th cousin 5 times removed | | |
| Matchett, John | Husband of the 5th great-grandaunt | | |
| Matteson, Eugene | Husband of the 6th cousin 3 times removed | | |
| Maxfield, Albert | 6th cousin 4 times removed | XVIII | 11 |
| Maxfield, Aldema | 6th cousin 4 times removed | XVIII | 11 |
| Maxfield, Almena | 6th cousin 4 times removed | XVIII | 11 |
| Maxfield, Clarissa | 6th cousin 4 times removed | XVIII | 11 |
| Maxfield, Elizabeth | 6th cousin 4 times removed | XVIII | 11 |
| Maxfield, James Harvey | Husband of the 5th cousin 5 times removed | | |
| Maxfield, Julia | 6th cousin 4 times removed | XVIII | 11 |
| Maxfield, William Wallace | 6th cousin 4 times removed | XVIII | 11 |
| Maxwell, Thomas H. | Husband of the 7th cousin twice removed | | |
| McCabe, George B. | Husband of the 6th cousin twice removed | | |
| McCabe, Maude | Wife of the 6th cousin twice removed | | |
| McCarlin, Shepard | Husband of the 4th cousin 5 times removed | | |
| McCarthy, Jeremiah | Husband of the 7th cousin twice removed | | |
| McCaslin, Louisa Emily | Wife of the 5th cousin 4 times removed | | |
| McClelland | Husband of the 5th cousin 4 times removed | | |
| McClumpha, Janette | Wife of the 4th cousin 5 times removed | | |
| McClure, Mary Jane | Wife of the 7th cousin 3 times removed | | |
| McCollister, Mary | 4th great-grandmother | VI | 6 |
| McCornsky, Caroline | 2nd great-grandmother | IV | 4 |
| McDonald, Thomas | Husband of the 5th cousin 3 times removed | | |
| McIlroy, Bessie | Wife of the 6th cousin twice removed | | |
| McKay, Cameron | Husband of the 7th cousin twice removed | | |
| McLaughlin, Marie T. | Wife of the 7th cousin once removed | | |
| McMichael, Hugh Morton Jack | Husband of the 7th cousin 3 times removed | | |
| McNeil, Hattie | Wife of the 6th cousin 3 times removed | | |
| McWilliams, Robert | Husband of the 6th cousin 3 times removed | | |
| Mead | Husband of the 3rd cousin 5 times removed | | |
| Meade, Joseph | Husband of the 4th cousin 4 times removed | | |
| Meldonnay, Margaret Anna | Wife of the 7th cousin 3 times removed | | |
| Merville, Frank L. | Husband of the 8th cousin twice removed | | |
