| Name | Relationship with Holly Ferguson | Civil | Canon |
|---|
| MacPherson, Robert Howard | Spouse of the half 3rd cousin twice removed | | |
| Spouse of the half 5th cousin once removed | | |
| Spouse of the 6th cousin 3 times removed | | |
| Maddox, David | Husband of the 2nd cousin twice removed | | |
| Majdan, Mary | Grandmother of the husband | | |
| Majdan, Yanosh | Great-grandfather of the husband | | |
| Malchow, Arthur Henry | Husband of the 2nd cousin twice removed | | |
| Manley, Mark | 2nd cousin once removed | VII | 4 |
| Manley, Ron | Husband of the 2nd cousin | | |
| Manley, Ross | 2nd cousin once removed | VII | 4 |
| Manley, Ryan | 2nd cousin once removed | VII | 4 |
| Marbury, Katherine | 12th great-grandmother | XIV | 14 |
| Half 16th cousin 15 times removed | XLIX | 32 |
| Half 17th cousin 13 times removed | XLIX | 31 |
| Marbury, Robert | 14th great-grandfather | XVI | 16 |
| Half 14th cousin 17 times removed | XLVII | 32 |
| Half 15th cousin 15 times removed | XLVII | 31 |
| Marbury, William | 15th great-grandfather | XVII | 17 |
| Husband of the half 13th cousin 18 times removed | | |
| Husband of the half 14th cousin 16 times removed | | |
| Marbury, William | 13th great-grandfather | XV | 15 |
| Half 15th cousin 16 times removed | XLVIII | 32 |
| Half 16th cousin 14 times removed | XLVIII | 31 |
| Marks, William Bernard | Husband of the 6th cousin once removed | | |
| Marr, Sarah Elizabeth | Wife of the 3rd cousin 4 times removed | | |
| married, as of 2001 not | Wife of the 1st cousin | | |
| Wife of the half 30th cousin once removed | | |
| married, never | Wife of the 1st cousin 3 times removed | | |
| Martin, Alice | Half 2nd cousin 3 times removed | IX | 6 |
| Half 4th cousin twice removed | XII | 7 |
| 5th cousin 4 times removed | XVI | 10 |
| Martin, Audrey | Half 2nd cousin 3 times removed | IX | 6 |
| Half 4th cousin twice removed | XII | 7 |
| 5th cousin 4 times removed | XVI | 10 |
| Martin, Charles | Husband of the half 1st cousin 4 times removed | | |
| Husband of the half 3rd cousin 3 times removed | | |
| Husband of the 4th cousin 5 times removed | | |
| Martin, Charles | Half 2nd cousin 3 times removed | IX | 6 |
| Half 4th cousin twice removed | XII | 7 |
| 5th cousin 4 times removed | XVI | 10 |
| Martin, Marilyn | Half 2nd cousin 3 times removed | IX | 6 |
| Half 4th cousin twice removed | XII | 7 |
| 5th cousin 4 times removed | XVI | 10 |
| Martin, Pauline | Half 2nd cousin 3 times removed | IX | 6 |
| Half 4th cousin twice removed | XII | 7 |
| 5th cousin 4 times removed | XVI | 10 |
| Mary | Wife of the 7th great-granduncle | | |
| Maryanne, Judy or | Wife of the 1st cousin once removed | | |
| Mason, Abel | 1st cousin once removed | V | 3 |
| Half 31st cousin | LXIV | 32 |
