I do need help!
I went to the library yesterday to wrestle with the (very heavy) Drouin marriage index. I obtained some good data, but got completelystuck on the Thiffault side.
I have Henriette Thiffault, who married Eugène Beaudoin in St-Stanislas, February 12th 1866. Her parents are listed as Joseph Thiffault and Marguerite Lavigueur, but I could not find that marriage.