 Rousseau and Bailly maintained large warehouses on Mackinac and in Montreal; trading in numerous locations with several fleets of voyageurs.Joseph married Marie Lefevre de La Vigne (Mo-nee or Tou-se-qua) in 1810.She was born in 1783 in Ma-con, a large mixed-band Indian village on the Raisin River west of present Monroe, Michigan.