On 13 Nov 1760 Gardner first married Martha Wilder, daughter of James Wilder (ca 1710-16 Jan 1780) & Martha Wheeler (ca 1700-19 Mar 1774), in Lancaster, MA. Born 23 Feb 1736/7 in Lancaster, MA. Martha died in Lancaster, MA on 7 Mar 1764.

On 8 Mar 1765 Gardner second married Dorothy Richardson (56224) , daughter of Josiah Richardson (42048) (16 May 1706-late 1752) & Dorothy Wilder (45643) (ca 1713-4 Jun 1790), in Lancaster, MA.589 Married by Joseph Wilder Esq. Born on 27 Nov 1743 in Lancaster, MA.589 Dorothy died in Lancaster, MA, on 14 Feb 1789; she was 45.

14 Mar 1791 (Int.) Gardner third married Catherine Cotting in Lancaster, MA.

On 2 Feb 1762 when Rebecca was 20, she married James Locke (56231) , son of Samuel Locke (24 Aug 1702-13 Apr 1775) & Rebecca Richardson (42050) (14 Jul 1710-20 Sep 1789), in Lancaster, MA.279 Born on 13 Sep 1739 in Woburn, MA.279 James died in Lancaster, MA, on 19 Jan 1772; he was 32.

On 8 Mar 1765 Lucy married John Locke (56232) , son of Samuel Locke (24 Aug 1702-13 Apr 1775) & Rebecca Richardson (42050) (14 Jul 1710-20 Sep 1789), in Lancaster, MA.279 Born on 19 Apr 1742 in Woburn, MA.279 John died in Templeton, MA, on 17 Jun 1781; he was 39.279