There was a Jean-Baptiste St. Gemme Bauvais who immigrated from Canada to Kaskaskia in 1725 & became the wealthiest man in the Illinois Country.Sons were Jean-Bte and Vital St. Gemme B.They married in Kaskaskia and moved to Ste. Genevieve ca 1787. Vital married dtr of Nich. Janis.Jne. Bte. (fils) dtr. Marie Louise married Louis Bolduc (fils) in 1797.Vital's son, Vital (fils) married Therese Pratte, dtr of Jne. Bte. Pratte at Ste. G. in 1798.Any connection to your J. B. St. G. Bauvais?