‌Antoine and Jeanne Francoise Petit were married in a religious ceremony in Notre Dame Misericorde, Beauport, Quebec, Canada.  They had two sons and five daughters, named Fabien Antoine LaFosse, Francoise Suzanne LaFosse, Marie Joseph LaFosse, Laurent Etienne LaFosse, Marie Madeleien LaFosse, Marie Joseph LaFosse and Marie Angelique LaFosse.