On 1 Jan 1787 when Mercy was 19, she married
Isaiah Alden (45210) , son of
Bezaleel Alden (25898) (15 May 1722-9 Feb 1799) &
Lydia Bartlett (30931) (30 Aug 1725-24 Mar 1810), in Duxbury, MA.
Born on 26 Nov 1758 in Duxbury, MA. Isaiah died in Duxbury, MA, on 15 Mar 1845; he was 86.