Hi Linda. I have a book written by Lisette Poitras. The title is: La Famille Poitras 1850-1988 Saguenay/Lac St.Jean. Also, I found this marriage in : Répertoire des mariages du Saguenay/Lac St-Jean , printed en 1991, on page 351. Ambroise moved from Montmagny to Chicoutimi (Par: St.Frs-Xavier). The dates I gave you are correct. 1807 and 1850.