1686 - Birth of his father Jonathan Hartwell at Concord, Middlesex County, Massachusetts, USA 

29 Nov 1690 - Birth of his mother Hannah Blanchard at Woburn, Middlesex County, Massachusetts, USA 

11 Jun 1713 - Marriage of parents at Concord, Middlesex County, Massachusetts, USA 

30 Jul 1715 - Birth at Concord, Middlesex County, Massachusetts, USA 

1 Jan 1763 - Death of his mother Hannah Blanchard at Littleton, Middlesex County, Massachusetts, USA 

9 Dec 1770 - Death of his father Jonathan Hartwell at Littleton, Middlesex County, Massachusetts, USA