On 24 Dec 1770 Thomas third married Mary Butler in Chilmark, MA. Born on 17 Oct 1726 in West Tisbury, Dukes County, Massachusetts. Mary died in West Tisbury, Dukes County, Massachusetts, on 3 Aug 1793; she was 66.
Mary, daughter of David and Anna (Hatch) Butler, first married Rowland Luce, second thomas Allen as his third wife.