When Thomas Garrard Jackson was born on 2 April 1888, in Clay, Texas, United States, his father, Joseph Abner Jackson, was 52 and his mother, Josephine Carniela Gerrard, was 39. He married Elsie Pearl Rodden on 13 September 1907. They were the parents of at least 3 sons and 7 daughters. He lived in Justice Precinct 6, Coleman, Texas, United States for about 10 years and Commissioner's Precinct 4, Clay, Texas, United States in 1930. He died on 21 March 1960, in Bowie, Montague, Texas, United States, at the age of 71, and was buried in Vashti, Clay, Texas, United States.