Marie Gervais @1740 Vercheres, HELP!

Desparately looking for Marie Gervais married to Joseph St. Michel (?dit name).Their son, Joseph married Victoire Chagnon May 22 1791 in Vercheres. I realize Marie is common and don't know if she had another name but on Druin it is listed as Marie only. I have been looking so long for Marie if anyone can help me with this please e-mail me at Deerun9@aol.com Thanks, I'll take any leads please L.Provost