On 12 Mar 1777 when Mary was 20, she first married Stephen Palmer in Waltham, MA.27 Born on 9 Jan 1753. Stephen died on 1 Sep 1781; he was 28.

Stephen, of Cambridge, son of Stephen and Sarah (Gammage) Palmer.

On 13 Feb 1783 when Mary was 26, she second married Ebenezer Day. Born on 6 Sep 1747. Ebenezer died on 25 Mar 1822; he was 74.

Ebenezer, son of Ebenezer and Hannah (Downing) Day.