On 19 Apr 1770 when Levi was 22, he married Lydia Bradford (30671) , daughter of Benjamin Bradford (13362) (17 Oct 1705-16 Oct 1783) & Zeresh Stetson (25881) (29 Nov 1712-6 Apr 1763), in Kingston, MA. Born on 7 Jun 1749 in Kingston, MA.182 Lydia died in Kingston, MA, on 11 Jan 1818; she was 68.

Levi and Lydia were second cousins; his paternal grandmother and her maternal grandmother were sisters. They were also half second cousins; their paternal grandfathers were half brothers.