When Theodore Roosevelt Long was born on 17 November 1901, in Meeker, Rio Blanco, Colorado, United States, his father, Joseph Arthur Ben Long, was 41 and his mother, Mary Josephine Waldrom, was 21. He married Etta Avanga Meriwether on 17 April 1927, in Moffat, Colorado, United States. They were the parents of at least 4 sons and 1 daughter. He lived in Axial, Moffat, Colorado, United States in 1930 and Election Precinct 4 Hamilton, Moffat, Colorado, United States in 1940. He died on 30 May 1957, in Riverton, Fremont, Wyoming, United States, at the age of 55, and was buried in Craig, Moffat, Colorado, United States.