The French-Canadians that were displaced to Louisiana did not come from the province of Quebec but mainly from Acadie, the actual provinces of New Brunswick, Nova Scotia and maybe Prince Edward Island (then Ile St-Jean).They were Acadians which gave the appellation of Cajuns. This forced emigration happened in the first half of the 1750s.And many of them walked their way back to Canada.
I was surprised to read that Antoine and Mathilde went first to Louisiana. As I said I think that most of the F-C in the 1820s and afterwards settled down in the New England states where they found jobs in the cotton factories.
If Antoine ever came back here and got married again, we would have some legal acts in the registers???
If you ever find something new about Antoine or his children I would be glad to know.Their first names don't sound like French-Canadian names.I presume it was common at that time to change the names, I guess to favor integration into a new family and a new social environment.
I wish you the best of luck in your search of the missing links.
Antoine and Mathilde story is a dramatic one in a time when tuberculosis was a heavy killer. Is it known from what disease Mathilde died?
I made a mistake about Chiniqui.His first name was Charles instead of Ernest.