On 2 Apr 1737 when Othaniel was 29, he married
Mary Prior, daughter of
Benjamin Prior (ca 1672-) &
Bethia Pratt (8 Aug 1679-25 Dec 1756), in First Congegational Church of Hanover.
446 Born in 1714 in Duxbury, MA. Mary died in Hanover, MA on 12 Mar 1759.
Othaniel and Mary were first cousins; his father and her mother were siblings.