| Name | Relationship with Guy Bienvenue | Civil | Canon |
| Lacroix, Théodore | Great-grandfather | III | 3 |
| Lafleur, Marie-Josephe Brousseau Brousson Dit | Wife of the 1st cousin 7 times removed | | |
| Lafontaine, Gertrude Pion | Wife of the 1st cousin 6 times removed | | |
| Lafontaine, Hyppolite Pion | Husband of the half 4th cousin 4 times removed | | |
| Laframboise, Elise | Wife of the half 5th cousin 3 times removed | | |
| Laliberté, Jacqueline | 6th cousin once removed | XV | 8 |
| | 8th cousin | XVIII | 9 |
| | 6th cousin once removed of the wife | | |
| | 8th cousin of the wife | | |
| Laliberté, Jean-Louis | Husband of the 5th cousin | | |
| Laliberté, Marc (Alias Michel) Roireau | Husband of the 5th cousin twice removed | | |
| | Husband of the 7th cousin once removed | | |
| Laliberté, Marcelle | 6th cousin once removed | XV | 8 |
| | 8th cousin | XVIII | 9 |
| | 6th cousin once removed of the wife | | |
| | 8th cousin of the wife | | |
| Laliberté, Michèle | 5th cousin once removed | XIII | 7 |
| | 5th cousin once removed of the wife | | |
| Laliberté, Suzanne | 6th cousin once removed | XV | 8 |
| | 8th cousin | XVIII | 9 |
| | 6th cousin once removed of the wife | | |
| | 8th cousin of the wife | | |
| Laliberté, Thérèse | 6th cousin once removed | XV | 8 |
| | 8th cousin | XVIII | 9 |
| | 6th cousin once removed of the wife | | |
| | 8th cousin of the wife | | |
| Laliberté, Yvon | 6th cousin once removed | XV | 8 |
| | 8th cousin | XVIII | 9 |
| | 6th cousin once removed of the wife | | |
| | 8th cousin of the wife | | |
| Lamontagne, Marguerite | Wife of the 1st cousin 6 times removed | | |
| Lamontagne, Marie Lalus | Wife of the half 3rd cousin 5 times removed | | |
| Lamothe, Ginette | Wife of the half 7th cousin once removed | | |
| Lamothe, Léa | Wife of the half 5th cousin 3 times removed | | |
| Lamoureux, Ozilda | Wife of the 4th cousin 3 times removed | | |
| Lander, Carolyn Marie | Wife of the 5th cousin | | |
| Landry, Jeanne-Mance | Wife of the 1st cousin | | |
| Langevin, Augustin | Husband of the 3rd great-grandaunt | | |
| Langevin, Augustin | 3rd cousin 5 times removed | XIII | 9 |
| | 3rd cousin 5 times removed of the wife | | |
| Langevin, Bernard | Husband of the half 6th cousin twice removed | | |
| Langevin, Charles | Half 7th cousin once removed | XVII | 9 |
| | Half 7th cousin once removed of the wife | | |
| Langevin, Christine | Half 7th cousin once removed | XVII | 9 |
| | Half 7th cousin once removed of the wife | | |
| Langevin, Claire | Half 7th cousin once removed | XVII | 9 |
| | Half 7th cousin once removed of the wife | | |
| Langevin, François | 2nd cousin 6 times removed | XII | 9 |
| | 2nd cousin 6 times removed of the wife | | |
| Langevin, Jean-Baptiste | 3rd cousin 5 times removed | XIII | 9 |