On 29 Mar 1759 when William was 22, he first married
Abigail Kemp, daughter of
Zerubbabal Kemp (12 Oct 1705-) &
Abigail Lawrence (16 May 1718-bef 1758), in Hollis, Hillsborough County, New Hampshire.
Born 17 Jan 1740/1 in Groton, MA. Abigail died in Hancock, Hillsborough County, New Hampshire on 12 Jan 1787.