I don't know if this is any help, but here goes. In my family tree, there is a Joseph Proulx who married Marie-Amable Janvry in Ste-Genevieve, Montreal on February 26, 1816. He would be my great, great, greatgrandfather. I descend from his son Francois who married in 1845, but quite possibly there was another son who would be your relative. His 1817 birthdate would certainly be in the right ballpark. Feel free to contact me if you like.