Most of our information came from: St. Ferdinand Catholic Church, Florissant, Missouri
I have: Francois Tison b. Feb. 28, 1817and d. Jan. 4, 1904 in Florrisant, MO. to parents: Jean Baptiste Tison Jr. b. 1874 in Montreal, Ille de Montreal, Quebec, Canada d.June 11, 1833 in Florrisant, MO. who married: Hyacynthe Lorrain b.1790 and d.1865 in St. Louis, MO. I do not have any of his siblings listed. You may want to contactSt. Ferdinand Catholic Church, to see if they can find your Marie Anne Tesson birth records. If she is related to (Possible sister) Jean Bartiste Tison Jr. you might look to Montreal, Ille de Montreal, Quebec, Canada for her birth.
There was however a Tesson marrying in Cahokia, Illinois: Marie Tesson daughter of Honore Tesson and Madeleine Peltsoson or Peterson. She married on Jan 12, 1789 at Cahokia, to Louis Baudoin. Son of Louis Baudoin and Louise Barre' of Montreal. There are several mentions of these families among the records of Fort de Chartres(1721-1765), Illinois.This is down river from St. Louis. There was a small church there called Ste Anne. There is also a Louis Tesson acting as Godfather to a child, Louis Prevost-Blondin, in 1763 at the church of the Visitation in St. Philipes des Illinois, which appears to be near Fort des Chartres.
The Tesson spelling of the name has not yet appeared in my family line. I think your best bet would be with the Honore Tesson line. Your Marie may be a niece to the above mentioned Marie Tesson.Best Wishes,Lettie