| Name | Birth date | Relationship with Sean Mulcahey |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Elphege | September 30, 1898 | Great-grandfather |
| | | 6th cousin 3 times removed |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Etienne | 1623 | 9th great-grandfather |
| Lessard, Etienne | Abt. 1653 | 8th great-granduncle |
| Lessard, Eustache | August 21, 1891 | Great-granduncle |
| | | 6th cousin 3 times removed |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Eva Rose | December 18, 1887 | Great-grandaunt |
| | | 6th cousin 3 times removed |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Georgiana | November 17, 1879 | Great-grandaunt |
| | | 6th cousin 3 times removed |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Henry | February 02, 1893 | Husband of the great-grandaunt |
| | | Husband of the 6th cousin 3 times removed |
| | | Husband of the 7th cousin twice removed |
| | | Husband of the 6th cousin 4 times removed |
| | | Husband of the 7th cousin 3 times removed |
| Lessard, Jacqueline Antoinette | June 04, 1922 | Grandaunt |
| | | 7th cousin twice removed |
| | | 8th cousin once removed |
| | | 7th cousin 3 times removed |
| | | 8th cousin twice removed |
| Lessard, Jacques | Abt. 1610 | 10th great-grandfather |
| Lessard, James Gaspar | May 11, 1964 | 1st cousin once removed |
| | | 8th cousin once removed |
| | | 9th cousin |
| | | 8th cousin twice removed |
| | | 9th cousin once removed |
| Lessard, Janet Ann | December 03, 1965 | 1st cousin once removed |
| | | 8th cousin once removed |
| | | 9th cousin |
| | | 8th cousin twice removed |
| | | 9th cousin once removed |
| Lessard, Jason | | 1st cousin once removed |
| | | 8th cousin once removed |
| | | 9th cousin |
| | | 8th cousin twice removed |