Career
Barbour was the father of James Barbour (18th Governor of Virginia and 11th United States Secretary of War) and Philip Pendleton Barbour (United States Congressman from Virginia and an Associate Justice of the United States Supreme Court). Thomas Barbour was born in 1735 in Orange County, Virginia. Barbour married Mary Pendleton Thomas, a first cousin of Edmund Pendleton, in 1771.
Barbour served as Justice of the Peace for Orange County and held the position from 1768 until his death.
From 1769 until 1775, Barbour represented Orange County in the Virginia House of Burgesses. Thomas died at Barboursville in 1825.