| Birth* | Marie-Josephte Cusson was born on 20 December 1726 at St-Sulpice, L'Assomption, Québec, Canada. |
| She was the daughter of Joseph Cusson and Francoise Bousquet. |
| Christening | Marie-Josephte Cusson was christened on 21 December 1726 at St-Sulpice, L'Assomption, Québec, Canada. |
| Marriage* | She married Charles De Xavier, son of Louis-Francois De Xavier dit Beaupré and Marie-Jeanne Delpêche, on 14 February 1746 at St-Sulpice, L'Assomption, Québec, Canada. |
| Marriage Contract | A contract for the marriage of Marie-Josephte Cusson and Charles De Xavier was signed on 13 February 1746 at St-Sulpice, L'Assomption, Québec, Canada; Notary Sanguinet, Simon. |
| Death* | Marie-Josephte Cusson died after 1755 at Lavaltrie, Berthier, Québec, Canada. |
| Burial* | She was buried after 1755 at Lavaltrie, Berthier, Québec, Canada. |
| Married Name | Her married name was De Xavier. |
