21 Feb 1752 - Birth of his wife Mary Warner at North Scituate, Gloucester County, Rhode Island, USA 

1753 - Birth at Dartmouth, Bristol County, Massachusetts, USA 

1779 - (26 years) Marriage with Mary Warner at Glocester, Providence County, Rhode Island, USA 

23 May 1784 - (31 years) Birth of his son Benjamin Howland at Concord, Lisbon County, New Hampshire, USA 

10 Sep 1835 - (82 years) Death at Lisbon, Grafton County, New Hampshire, USA 

10 Sep 1835 - (82 years) Burial at Sugar Hill, Grafton County, New Hampshire, USA 

29 Mar 1845 - Burial of his wife Mary Warner at Lisbon, Grafton County, New Hampshire, USA 

29 Mar 1845 - Death of his wife Mary Warner at Lisbon, Grafton County, New Hampshire, USA 

1860 - Death of his son Benjamin Howland at Landaff, Grafton County, New Hampshire, USA