| Father | Eustache Harnois (1682 - 1762) |
| Mother | Marie Therese Chabot (1687 - 1757) |
| Sibling | Andre Harnois (1715 - 1759) |
| Sibling | Francois Harnois (1722 - 1722) |
| Sibling | Michel Harnois (1723 - 1743) |
| Sibling | Marie Joseph Harnois (1730 - 1730) |
| Sibling | Jean Baptiste Harnois (1714 - 1798) |
| Sibling | Marie Anne Harnois (1726 - 1780) |
| Sibling | Marie Charlotte Harnois (1719 - 1756) |
| Sibling | Eustache Harnois (1712 - ) |
| Sibling | Marie-Catherine Harnois (1716 - 1745) |
| Sibling | Marie Joseph Harnois (1729 - 1782) |
| Sibling | Joseph Harnois (1717 - 1742) |