Brother of actor Shelly Hull; brother-in-law of Shelly's spouse, actress Josephine Hull.
Father of producer Shelley Hull.
His actress wife, Juliet van Wyck Fremont (1884-1971), was the granddaughter of Civil War general and explorer John C. Fremont. The couple appeared together on Broadway in "The Man Who Came Back" in 1916.
Lived on an Old Lyme, Connecticut, farm with his wife for over thirty years. Following her death in 1971 and after suffering a stroke, he moved to his daughter Joan's home in Cornwall, England.
Had three children: Henry Jr., an infrequent performer and stage manager; Shelley (named after his deceased brother and a prolific TV producer); and Joan.
Was induced to attempt a stage career after the Broadway success of his brother Shelly Hull.
Enrolled at Cooper Union and Columbia University and studied engineering. During one brief juncture he worked as an assayer and mineralogist.
Born in Louisville, Kentucky, the son of William Madison and Elinor (Vaughn) Hull, he moved with his family in 1902 to New York City, where his father, a newspaper editor, critic and editor, was offered a position in the Klaw and Erlanger theatre syndicate booking office.
Died in England but was interred in the Rockland Cemetery in Sparkill, New York, next to his wife.
His wife, Juliet Fremont, was the granddaughter of Civil War general and explorer John C. Fremont. In a 1960 episode of Bonanza, "The Mission," Hull played an aging former Army scout who served with honor under General Fremont.
Played the title role in Werewolf of London (1935), the first werewolf movie ever made.