On 19 Jun 1793 when Gideon Thomas was 37, he third married
Lydia Cushing (57364) , daughter of
David Cushing (44913) (7 Sep 1727-14 Feb 1800) &
Ruth Lincoln (44872) (ca 1732/3-6 Jul 1761), in Pembroke, MA.
Born on 2 Jun 1761 in Hingham, MA. Lydia died in Pembroke, MA, on 7 Jan 1824; she was 62.
Lydia first married Asaph Tracy, second Gideon White as his third wife.