John married Sarah Ward on 22 Apr 1800. Sarah (daughter of John Ward, Sr. and Mindwell Harrington) was born on 19 Jun 1775; died on 14 Sep 1843 in Worcester, Worcester, Massachusetts, USA. [Group Sheet] [Family Chart]

1. Rhoda Flagg was born on 12 Mar 1801 in Worcester, Worcester, Massachusetts, USA; died on 11 Nov 1862.
2. Phineas Flagg was born on 30 Sep 1802; died on 20 Jan 1807.
3. Sarah Flagg was born on 13 Nov 1804; died on 3 Sep 1838.
4. Lucy Flagg was born on 4 Nov 1807; died on 8 May 1810.
5. Mary W. Flagg was born on 26 Mar 1810; died on 13 Mar 1892.
6. Nahum Flagg was born on 27 Apr 1812.
7. Hannah Flagg was born on 1 Oct 1815.
8. Charles Flagg was born on 3 Nov 1821.