| Father | Francois David Lacourse (1817 - 1876) |
| Mother | Emelie Gauvreau (1824 - 1881) |
| Sibling | Aurelie Lacourse (1843 - 1904) |
| Sibling | François Lacourse (1844 - 1911) |
| Sibling | Uldorique Lacourse (1845 - 1853) |
| Sibling | Louis Leon Lacourse (1847 - ) |
| Sibling | Marie Léocadie Lacourse (1848 - 1895) |
| Sibling | Clovis Lacourse (1850 - 1901) |
| Sibling | Eugène Lacourse (1852 - 1852) |
| Sibling | Louis Lacourse (1852 - 1853) |
| Sibling | Landry Lacourse (1853 - 1854) |
| Sibling | Marie Virginie Eugenie Lacourse (1856 - 1927) |
| Sibling | Joseph Saul Lacourse (1858 - 1858) |
| Sibling | Joseph Geoffroy Lacource (1859 - 1920) |
| Sibling | Joseph Meteus Pétrus Lacourse (1861 - 1925) |
| Sibling | David Lacourse (1863 - ) |
| Sibling | Adèle Lacourse (1866 - 1928) |
| Sibling | Marie Honorine Lacourse (1867 - ) |
| Sibling | Joseph Desire Lacourse (1867 - 1868) |
| Sibling | Georges Lacourse (1869 - 1880) |