When Thomas Hills was born on 19 June 1862, in Great Staughton, Huntingdonshire, England, United Kingdom, his father, Lewis Hills, was 32 and his mother, Caroline Bosworth, was 32. He married Mary Ellen Ball on 9 July 1885, in Logan, Cache, Utah, United States. They were the parents of at least 1 son and 1 daughter. He lived in Coalville Election Precinct, Summit, Utah, United States in 1900 and Coalville, Summit, Utah, United States for about 10 years. He died on 9 July 1923, in Wyoming, United States, at the age of 61, and was buried in Coalville, Summit, Utah, United States.