Colonel Francis Thornton III
- Born: 7 Apr 1714, Snow Creek, Frederick Co., Virginia
- Marriage: Frances Gregory on 3 Sep 1736 in Fall Hill, Spotsylvania Co., Virginia
- Died: 7 Apr 1749 at age 35
Francis played an important part in county affairs, serving as vestryman, member of the House of Burgesses, and Colonel of the Militia. His will was written 11 Nov 1748, proved 5 Sep 1749, Spottsylvania Co., VA.
Francis married Frances Gregory, daughter of Colonel Roger Gregory and Mildred Washington, on 3 Sep 1736 in Fall Hill, Spotsylvania Co., Virginia. (Frances Gregory was born about 1720 in Spotsylvania Co., Virginia and died on 22 Jan 1790 in Fall Hill, Spotsylvania Co., Virginia.)