On 8 Feb 1759 when Mary was 24, she first married Joel Hunt (27477) , son of Jonathan Hunt (11206) (24 Apr 1697-22 Apr 1768) & Thankful Strong (26898) (26 Aug 1702-5 May 1785). Born on 29 May 1731 in Northampton, Hampshire County, Massachusetts. Joel died in Northampton, Hampshire County, Massachusetts, on 8 Mar 1776; he was 44.

On 20 Jun 1782 when Mary was 47, she second married Benjamin Clark, son of Samuel Clark (20 Aug 1688-17 Oct 1745) & Sarah Rust (23 Dec 1704-), in Northampton, Hampshire County, Massachusetts. Born on 24 Dec 1729 in Northampton, Hampshire County, Massachusetts. Benjamin died in Northampton, Hampshire County, Massachusetts, on 14 Jun 1798; he was 68.