Just found your link and my ancestor, Elizabeth Beinvenue, who married Francois de Coco Corset. He lived at Ft Kaskaskia and then moved to Ste Gen. I have as of yet found Elizabeth in Ste Gen, but her children, went to Ste Gen. Francois is buried beneath the choir at the Ste Gen Catholic Church. He was the church cantor. I also found a Philip Beinvenue at Kaskaskia during the same time period.