On 2 Sep 1773 when Joshua was 24, he first married Olive Thomas (42317) , daughter of Dea. Nehemiah Thomas Esq. (22467) (26 Jul 1712-30 May 1782) & Abiah Winslow (24324) (Dec 1721-7 Aug 1809), in Marshfield, MA. Born on 28 Dec 1752 in Scituate, MA.52 Olive died in Duxbury, MA, on 7 Dec 1791; she was 38.

On 7 Feb 1793 when Joshua was 43, he second married Ruth Thomas (42318) , daughter of Dea. Nehemiah Thomas Esq. (22467) (26 Jul 1712-30 May 1782) & Abiah Winslow (24324) (Dec 1721-7 Aug 1809), in Marshfield, MA. Born on 14 Jun 1755 in Scituate, MA.52 Ruth died in Duxbury, MA, on 31 Oct 1793; she was 38.

On 7 Feb 1792 when Joshua was 42, he third married Deborah Fish in Marshfield, MA. Born on 10 Dec 1756. Deborah died in Duxbury, MA, on 18 Nov 1842; she was 85.