- Born: 9 Oct 1791, Connecticut
- Marriage (1): Polly G.
- Marriage (2): Ruth Clark on 8 Nov 1812
- Died: 29 Jul 1864 at age 72
A Genealogy of the Leavenworth Family in the United States: With Historical Introduction, Etc.
By Elias Warner Leavenworth
Published by S. G. Hitchcock & co., 1873
Original from the University of Michigan
Digitized Feb 17, 2006
Isaac married Polly G. (Polly G. was born circa 1794 in Huntington, Fairfield county, Connecticut, died on 30 Apr 1857 and was buried in Pines Bridge Cemetery in Beacon Falls, Connecticut.)
Isaac next married Ruth Clark on 8 Nov 1812. (Ruth Clark was born on 30 Jul 1793, died on 27 Oct 1830 and was buried in Pines Bridge Cemetery in Beacon Falls, Connecticut.)