Isaac married Marie Sophie Valliere on 26 Jul 1841 in Montreal (Notre Dame), Quebec, Canada. Marie (daughter of Jean Baptiste Valliere and Marie Marguerite Vermet) was born on 3 Jul 1820 in Montreal (Notre Dame), Quebec, Canada; was christened on 4 Jul 1820 in Montreal (Notre Dame), Quebec, Canada; and died. [Group Sheet] [Family Chart]

1. Jean Baptiste Isaac Galarneau was born on 3 May 1842 in Montreal (Notre Dame), Quebec, Canada; was christened on 5 May 1842 in Montreal (Notre Dame), Quebec, Canada; and died.
2. Delima Emma Galarneau was born on 3 Feb 1846 in Montreal (Notre Dame), Quebec, Canada; was christened on 4 Feb 1846 in Montreal (Notre Dame), Quebec, Canada; died on 18 Aug 1941 in Eloise, Wayne, Michigan, United States; was buried on 20 Aug 1941 in Detroit (Mt. Olivet), Wayne, Michigan, United States.
3. Marie Roseanne Galarneau was born on 14 Nov 1848 in Montreal (Notre Dame), Quebec, Canada; was christened on 15 Nov 1848 in Montreal (Notre Dame), Quebec, Canada; and died.
4. Rose Galarneau was born on 28 Sep 1855 in Michigan, United States; died on 19 Oct 1943 in Los Angeles, California, United States.
5. Augustus Galorneau was born on 8 Apr 1858 in Michigan; died on 16 Jan 1945 in Los Angeles, California, United States.
6. Josephine Galarneau was born about 1860 in Michigan, United States; died on 7 May 1898 in Grand Haven, Ottawa, Michigan, United States; was buried on 10 May 1898 in Grand Haven, Ottawa, Michigan, United States.