Zaarina, Hi! I'm am a descendant of Genevieve Monique Rivard d/o Antoine and Marie Briard. As you probably know, she married Joseph Chauvin dit Charleville (Joseph/Gilles Chauvin/Grand Pierre Chauvin) and then settled in Ste.Genevieve, Missouri, where they raised their family. Her marriages are recorded at:www.randolphcountyillinois.net
Her sons Francois (my line), Charles, and Louis, (I'm uncertain abt JnBpte) all prominent in the region for their part in the American Revolution, and her husband, 'the Sr. Charleville,' as recorded in the 'George Rogers Clark's Papers' historic collection. There's an Index on-line, of which I gave a quick look at Roll 13.
I still have a long way to go as I only began w/i past year but i have a decent amt of info. I'm more than willing to share, if you'll just let me know whether you still lack it or not, considering how much time has passed since your post.
I was hoping for an emailed copy of Genevieve's birth record from you if it's not too much to ask. I think you can access my address from clicking on my name--if not, contact me thru the board and I'll post it for you.