Would like to communicate with decendants of this fellow. He married Marie Catherine Proteau (b. 1791) at St. Joseph in Chambly, Quebec in 1812. They had at least 10 children. One was Flavien who listed Antoine and M. Catherine as his parents on his parish marriage record but we cannot find a birth/baptism record for him. Subsequent census records for Flavien point to a birth year 1823 or 24.
He might be Symphorien, born 1822, with a different name by confirmation time, but I'm hoping to get definite answers outside the St. Joseph Chambly parish records.