On 18 Dec 1760 when Isaiah was 29, he married Lydia Gill (53429) , daughter of Samuel Gill (36742) (9 Apr 1717-19 Jun 1772) & Rebecca Leavitt (44858) (22 Jun 1720-7 Oct 1744), in Hingham, MA.45 Born on 1 Sep 1738 in Hingham, MA.45 Lydia died in Hingham, MA, on 27 Feb 1815; she was 76.