| Name | Birth date | Relationship with Sean Mulcahey |
| | | 9th cousin |
| | | 8th cousin twice removed |
| | | 9th cousin once removed |
| Lessard, Cecile | December 05, 1889 | Great-grandaunt |
| | | 6th cousin 3 times removed |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Cheryl Ann | December 21, 1963 | Aunt |
| | | 8th cousin once removed |
| | | 9th cousin |
| | | 8th cousin twice removed |
| | | 9th cousin once removed |
| Lessard, Conrad | March 30, 1866 | Great-granduncle |
| | | 6th cousin 3 times removed |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Conrad | 1923 | Granduncle |
| | | 7th cousin twice removed |
| | | 8th cousin once removed |
| | | 7th cousin 3 times removed |
| | | 8th cousin twice removed |
| Lessard, Constance | Abt. January 04, 1932 | Grandaunt |
| | | 7th cousin twice removed |
| | | 8th cousin once removed |
| | | 7th cousin 3 times removed |
| | | 8th cousin twice removed |
| Lessard, Daniel John | July 29, 1951 | 1st cousin once removed |
| | | 8th cousin once removed |
| | | 9th cousin |
| | | 8th cousin twice removed |
| | | 9th cousin once removed |
| Lessard, Delvina | January 05, 1883 | Great-grandaunt |
| | | 6th cousin 3 times removed |
| | | 7th cousin twice removed |
| | | 6th cousin 4 times removed |
| | | 7th cousin 3 times removed |
| Lessard, Denise Marie | April 09, 1968 | 1st cousin once removed |
| | | 8th cousin once removed |
| | | 9th cousin |
| | | 8th cousin twice removed |
| | | 9th cousin once removed |
| Lessard, Donna Marie | October 08, 1955 | 1st cousin once removed |
| | | 8th cousin once removed |
| | | 9th cousin |
| | | 8th cousin twice removed |
| | | 9th cousin once removed |
| Lessard, Edouard | June 02, 1881 | Great-granduncle |
| | | 6th cousin 3 times removed |