William married Elizabeth Brown on 2 Jun 1743 in Watertown, Middlesex, Massachusetts, USA. Elizabeth (daughter of Captain Jonathan Brown, Sr. and Elizabeth Simonds) was born on 8 Feb 1719 in Watertown, Middlesex, Massachusetts, USA; died on 19 Nov 1803 in Waltham, Middlesex, Massachusetts, USA. [Group Sheet] [Family Chart]

1. Elizabeth Coolidge was born on 28 Mar 1744 in Watertown, Middlesex, Massachusetts, USA; died on 15 May 1786.
2. Eunice Coolidge was born on 12 Jan 1747 in Watertown, Middlesex, Massachusetts, USA.
3. William Coolidge was born on 2 Oct 1749 in Watertown, Middlesex, Massachusetts, USA; died on 25 Mar 1779.
4. Lucy Coolidge was born on 1 Jan 1750 in Watertown, Middlesex, Massachusetts, USA; died on 13 Nov 1823.
5. Anna Coolidge was born on 2 Oct 1752 in Watertown, Middlesex, Massachusetts, USA; died on 30 Jan 1846 in Lincoln, Middlesex, Massachusetts, USA.
6. Hepzibah Coolidge was born on 9 Mar 1754 in Watertown, Middlesex, Massachusetts, USA; died on 14 Mar 1795.
7. John Coolidge was born on 7 Jan 1758 in Watertown, Middlesex, Massachusetts, USA; died on 19 Apr 1781.
8. Jonathan Coolidge was born on 21 Apr 1759 in Watertown, Middlesex, Massachusetts, USA; died in 1841.
9. Elias Coolidge was born on 22 Sep 1762 in Watertown, Middlesex, Massachusetts, USA; died on 30 Apr 1779 in Watertown, Middlesex, Massachusetts, USA.