Thornwell K. Yarbrough was born on 16 Jul 1885 in Kershaw, South Carolina, USA a child of William Harrison Yarbrough and Elizabeth Jane Wilson Yarbrough.
Thornwell Yarbrough was counted in the census on 07 Jun 1900 in Buffalo, Kershaw, South Carolina, USA, as a 15-year-old, male, single, white, son. Also in the home was his father, Wm Harris Yarbrough; his mother, Lizzie Yarbrough; and his siblings, Daniel Yarbrough, Lucretia Yarbrough, and Oscar Yarbrough.
Thomas Yarborough was counted in the census on 04 May 1910 in Buffalo, Kershaw, South Carolina, USA, as a 25-year-old, male, single, white, son. Also in the home his father W H Yarborough; his mother, Elizabeth Yarborough; and his sister, Daniel Yarborough, Lee Yarborough, Louise Yarborough, and Oscar Yarborough.
He died on 16 Sep 1912 in South Carolina, USA. He was buried in Bethune, Kershaw, South Carolina, USA at Scotch Cemetery.