Curiously, I am also looking for great grandparents: Augustin Emile RIEUTORD who married Tirsa PAREDES abt. 1880's in Bocoachi, Sonora, MX. They moved to Cananea shortly thereafter. One of their daughters, Maria (my grandmother) married James Preston HALL in Tombstone, Cochise County, AZ abt. 1925.....do we have a connection?