Entered movies in 1916 and played Sid Sawyer in "Tom Sawyer" and "Huck and Tom", 1917 and 1918 respectively, at the request of Mary Pickford. He went on to play minor roles in a number of films but did not fare too well with the coming of sound. His last film role was that of a wounded soldier in "Gone With The Wind." Hackathorne died following a prolonged illness.