24 Jul 1758 - Birth of his biological father Adonijah Howe at Brookfield, Worcester County, Massachusetts, USA 

Abt. 1760 - Birth of his biological mother Sarah Ripley

4 Nov 1779 - Marriage of parents

14 Oct 1780 - Birth at Jaffrey, Cheshire County, New Hampshire, USA 

31 Jul 1782 - (1 year) Death of his biological father Adonijah Howe at Jaffrey, Cheshire County, New Hampshire, USA 

13 Dec 1800 - (20 years) Death of his biological mother Sarah Ripley

12 Mar 1826 - (45 years) Death at Beverly, Essex County, Massachusetts, USA