On François' marriage, Pierre Dubreuil and his wife are listed as ''nourriciers'' and not adoptive parents. ie foster-parents. François has no family name on the record. He is probably a foundling brought up by them. There doesn't appear to have been a formal adoption up to that time. He should be detached from them as parents, since they aren't even adoptive.
There are very few actual adoption records back in this era, if such exist they would be as a notarial act, there wasn't the system of orphanages as we know them later. Probably given in care to the couple by the parish priest or churchwardens.
