I show Joseph Prosper Desgroseilliers and Charlotte Nunegan dit Boursier had eight children born in St. Joachim, Chateauguay. However the 6th child, Marie Josephe, was born 1777 and the 7th, Marie, was born 1793. That's 16 years between births. Did Joseph Prosper remarry or were more children born between 1777 and 1793? It is a puzzle!