| Father | Jean Baptiste Foucault Courchesne Lefrancois (1682 - 1750) |
| Mother | Marguerite Bergeron (1692 - 1730) |
| Sibling | Madeleine Marie Foucault dit Courchêsne (1709 - ) |
| Sibling | Antoine Courchesne (1710 - 1793) |
| Sibling | Jean Baptiste Foucault Courchesne (1710 - 1734) |
| Sibling | Marie Madeleine Foucault Courchesne (1712 - 1770) |
| Sibling | Joseph Pierre Foucault Courchesne Lefrancois (1714 - 1715) |
| Sibling | Marguerite Foucault Courchesne (1716 - 1785) |
| Sibling | Joseph Foucault-Courchesne (1724 - 1788) |
| Sibling | Francois Foucault Courchesne (1726 - 1755) |
| Sibling | Louis Foucault Courchesne (1728 - 1817) |
| Sibling | Veronique Geneviève Foucault Courchesne (1730 - 1813) |