Thomas was born at
York Co., South Carolina, on 19 December 1835. He married
Agnes Caroline Strong before 1867. Thomas was listed as the head of a family on the 1880 Census at
Fairfield Co., South Carolina. South Carolina, Fairfield Co. lists the following family: Thomas P. Mitchell, age 42, farmer, born in South Carolina, parents born in South Carolina; Agnes C. Mitchell, age 40, wife, born in South Carolina, father born in South Carolina, mother born in North Carolina; Christopher Brice, age 19, step son, born in South Carolina; Johnnie C. Brice, age 16, step daughter, born in South Carolina; William F. Mitchell, age 13, son, born in South Carolina; Martha E. Mitchell, age 11, daughter, born in South Carolina; W. Rebecca Mitchell, age 9, daughter, born in South Carolina; John Stevenson, age 25, servant, born in Ireland, parents born in Ireland.. Thomas died on 14 October 1900 at
South Carolina at age 64. His body was interred in October 1900 at
Fairfield Co., South Carolina, at New Hope ARP Cemetery.