| Birth* | Marie-Anne Gagnon was born circa 1726 at Ste Anne de Beaupré, Montmorency, Québec, Canada. |
| Christening | She was christened circa 1726 at Ste Anne de Beaupré, Montmorency, Québec, Canada. |
| She was the daughter of Jean Gagnon and Geneviève Chamard. |
| Marriage* | Marie-Anne Gagnon married Augustin Lacroix, son of Augustin Lacroix and Jeanne Paré, on 14 November 1746 at St Joachim, Montmorency, Québec, Canada. |
| Death* | Marie-Anne Gagnon died after 1769 at Ste Anne de Beaupré, Montmorency, Québec, Canada. |
| Burial* | She was buried after 1769 at Ste Anne de Beaupré, Montmorency, Québec, Canada. |
