He was a Major.
Setteled in Dutchess, County, New York with his father & brothers before the revolution. resident in the town of North East. a farmer; 2nd Lieut. in Capt. Abraham Hartwell's Co., 1st Regt. Dutchess Co. Milta on Mar 18, 1778
Served in Col. Morris Graham's regimant of New York milta.

Inscription on his headstone at Dutchess County, New York, Winchell Mountain Burying Ground:
Major David Hamblin
May 28, 1806
63rd Year of his life.
I leave this dying flesh behind
and go the way of all mankind
and shall ascend to God on high
to dwell with him above the sky.