Trivia

In 1984 she helped a friend, producer Thomas R. Bond II, re-establish The Biograph Co., aka American Mutoscope & Biograph Co., which is the oldest movie company in the US, having been established in 1895.

During the filming of The Unpardonable Sin (1919), production was shut down for health reasons. However, as only two or three days remained to be shot, Sweet and other members of the cast and crew wore hospital masks as a precaution.

She was named "Blanche" after her maternal grandmother, Blanche Alexander, who raised her.

She refused to appear bare-legged in Man's Genesis (1912) and so lost the role to Mae Marsh.

Her father deserted the family and her mother died at age 19. She was raised by her maternal grandmother, who agreed to let Blanche appear on stage when she was only 18 months old.

Off screen pseudonym: Daphne Wayne

When writer Rebecca West complained to her about the $10,000 she had been paid for her novel "The Return of the Soldier," Sweet paid her another $5000. Ultimately Sweet and Marshall Neilan had to sell the property to MGM because they charged so much for rental of their British studios. Eventually the book was made into a film in 1982, The Return of the Soldier (1982).

Cousin of players Florence Short, Gertrude Short and Antrim Short.

Daughter-in-law of Florence Hackett.

Sister-in-law of Albert Hackett.

Ex-stepmother of Marshall Neilan Jr..

Profiled in "Speaking of Silents: First Ladies of the Screen" by William Drew, 1997.