Career
Born on Long Island, New York in the village of Great Neck on August 18, 1891, Sullivan had his start in film shorts in the 1910s. His first film production was a short which was part of a 23-part serial entitled, The Million Dollar Mystery, in 1914. The 23 episodes were edited into a feature-length film of the same name in 1918.
His first feature-length film was in the role of King Arthur in 1917"s Over the Hill.
During the early 1920s, he continued to work mainly in shorts, before moving into almost exclusively feature films in 1925. During his career he appeared in over 80 productions, including over 50 feature films.
