In your research into the Gamache surneame, have you run into any record of children produced by the union of Jean Baptiste (Missouri explorer, ferry operator) and a Tamaora Indian girl named Mi-no-rah? This is our "family story" and I am unable to make the connection between Jean Baptiste Gamache and Mary Williams (of Indian decent) and supposedly his great grandchild??? Mary Williams was "over 18" when she married John A. Vahey in DeSoto, Jefferson County, MO. on 25 November 1885. My grandfather had a sister named Nora (aka Aunt Minna) - possibly a namesake?