William married Ellen Keeler in 1822. Ellen (daughter of Keeler and Eleanor Sterling) was born on 14 Jun 1808 in Towanda, Bradford Co, PA, USA; died on 3 May 1870 in Dixon, Lee Co, IL, USA. [Group Sheet] [Family Chart]

1. William Keeler Flatt was born on 27 Aug 1831 in Bradford Co, PA.
2. Montravill Flatt was born on 3 Oct 1823 in PA, USA; died in in Dixon, Lee Co, IL, USA.
3. Cornelius Judson Flatt was born on 22 Mar 1825 in PA, USA.