| Father | François - Thomas Tranchemontagne (1733 - ) |
| Mother | Marie Petronille Louise Boulanger (1736 - 1822) |
| Sibling | Joseph Francois Thomas Tranchemontagne (1761 - 1821) |
| Sibling | Marie Louise Thomas Tranchemontagne (1756 - 1799) |
| Sibling | Marie Josephe Thomas Tranchemontagne (1758 - 1762) |
| Sibling | Francois Thomas Tranchemontagne (1763 - 1821) |
| Sibling | Alexis - Thomas Tranchemontagne (1764 - ) |
| Sibling | Antoine Thomas dit Tranchemontagne (1767 - ) |
| Sibling | Marie Genevieve Thomas Tranchemontagne (1769 - ) |
| Sibling | Pierre Thomas Tranchemontagne (1771 - 1772) |
| Sibling | Amable Thomas Tranchemontagne (1774 - 1776) |
| Sibling | Marie Pelogie Thomas Tranchemontagne (1776 - 1777) |