| Name | Relationship with Margaret Plauche | Civil | Canon |
| Plauche, Etienne Henri | 4th great-grandfather | VI | 6 |
| Plauche, Jean Baptiste | Granduncle | IV | 3 |
| Half 2nd cousin twice removed | VIII | 5 |
| Half 3rd cousin twice removed | X | 6 |
| Half 4th cousin once removed | XI | 6 |
| 4th cousin twice removed | XII | 7 |
| Half 4th cousin 3 times removed | XIII | 8 |
| 4th cousin 3 times removed | XIII | 8 |
| Half 5th cousin once removed | XIII | 7 |
| Half 5th cousin twice removed | XIV | 8 |
| 5th cousin twice removed | XIV | 8 |
| Half 5th cousin 3 times removed | XV | 9 |
| 5th cousin 3 times removed | XV | 9 |
| Half 5th cousin 4 times removed | XVI | 10 |
| Plauche, John Paul | Brother | II | 1 |
| Half 4th cousin | X | 5 |
| Half 4th cousin once removed | XI | 6 |
| Half 5th cousin | XII | 6 |
| Half 5th cousin once removed | XIII | 7 |
| 5th cousin once removed | XIII | 7 |
| 6th cousin | XIV | 7 |
| Half 6th cousin | XIV | 7 |
| Half 5th cousin twice removed | XIV | 8 |
| 6th cousin once removed | XV | 8 |
| Half 6th cousin once removed | XV | 8 |
| 7th cousin | XVI | 8 |
| 6th cousin twice removed | XVI | 9 |
| Half 6th cousin twice removed | XVI | 9 |
| Half 7th cousin | XVI | 8 |
| 7th cousin once removed | XVII | 9 |
| Half 7th cousin once removed | XVII | 9 |
| Half 8th cousin | XVIII | 9 |
| Half 7th cousin twice removed | XVIII | 10 |
| Half 8th cousin once removed | XIX | 10 |
| Plauche, Joseph Alexander | 3rd great-grandfather | V | 5 |
| Husband of the half 3rd great-grandaunt | | |
| Plauche, Joseph Ceasar | Father | I | 1 |
| Half 3rd cousin once removed | IX | 5 |
| Half 3rd cousin twice removed | X | 6 |
| Half 4th cousin once removed | XI | 6 |
| Half 5th cousin | XII | 6 |
| Half 4th cousin twice removed | XII | 7 |
| 4th cousin twice removed | XII | 7 |
| Half 4th cousin 3 times removed | XIII | 8 |
| 5th cousin once removed | XIII | 7 |
| Half 5th cousin once removed | XIII | 7 |
| 5th cousin twice removed | XIV | 8 |
| Half 5th cousin twice removed | XIV | 8 |
| Half 6th cousin | XIV | 7 |
| 5th cousin 3 times removed | XV | 9 |