Guillaume married Marie Louise Duret on 8 Oct 1770 in Montreal, Quebec, Canada. Marie (daughter of Charles Duret and Marie Francoise Girard) was born on 10 May 1745 in Quebec, Quebec, Canada; was christened on 10 May 1745 in Quebec, Quebec, Canada; died on 15 Sep 1773 in Montreal, Quebec, Canada; was buried on 16 Sep 1773 in Montreal, Quebec, Canada. [Group Sheet] [Family Chart]