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

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

21 Jun 1784 - Birth at Jaffrey, Cheshire County, New Hampshire, USA 

13 Dec 1800 - (16 years) Death of his biological mother Sarah Ripley

7 Aug 1815 - (31 years) Death at Jaffrey, Cheshire County, New Hampshire, USA