On 28 May 1740 when John was 38, he first married Joanna Sprague (27768) , daughter of William Sprague (20888) (24 Dec 1675-27 Nov 1756) & Silence Tower (11396) (27 Aug 1684-1 May 1736), in Weymouth, MA.83 Born ca 1719 in Abington, MA. Joanna died in Weymouth, MA on 17 Dec 1741.83

Joanna, of Abington. Child of John and Joanna (Sprague) Nash:
    i. Joanna, b. 9 Nov 1741 at Weymouth, m. 22 Dec 1764 William Bradley of Abington.83

On 17 Jun 1742 when John was 40, he second married Elizabeth Turner (20618) , daughter of Philip Turner (7518) (18 Aug 1673-aft 6 May 1735) & Elizabeth Nash (17325) (say 1677-), in the Second Church of Scituate.52 Born on 22 Jun 1705 in Scituate, MA.52 At the age of 4, Elizabeth was baptized in the Second Church of Scituate, on 23 Oct 1709.52 Elizabeth died in Weymouth, MA, on 14 Oct 1759; she was 54. Marriage intention published on 28 May 1742 at Scituate, MA.52

John and Elizabeth were second cousins; his paternal grandfather and her maternal grandfather were brothers.

Child of John and Elizabeth (Turner) Nash:
    i. John, b. 21 Apr 1743 at Weymouth, d. there 14 Jul 1810, unmarried.83

Aft 14 Oct 1759 John third married Elizabeth Andrews, daughter of Samuel Andrews & Mehitable Goodwin, in Milton, MA.83 Born ca 1705. Elizabeth died in Weymouth, MA on 10 Dec 1795.83

On 12 Dec 1728 Sarah married John Porter (34678) , son of Sergt. John Porter (2 Jul 1667-22 May 1723) & Mercy Carver (16531) (1 Feb 1671/2-9 Mar 1708/9).521 Born on 23 Aug 1702 in Weymouth, MA.297 John died in Weymouth, MA, on 23 Sep 1767; he was 65.521