On 2 Jun 1787 when Foster was 21, he married Bethiah Glover in Holland, Hampden County, Massachusetts. Born on 24 Mar 1760 in Pembroke, MA. Bethiah died in Pembroke, MA, on 11 Mar 1841; she was 80.395

Bethia, daugher of Robert and Bethia (Tubbs) Glover.

Bethia died age 81.395