Alexandre Dumas' source for his novel was a book by 19th-century writer Courtils de Sandraz, which was purporting to be D'Artagnan's biography; the Musketeers were actually real people, not fictional characters created by Dumas.
Douglas Fairbanks (D'Artagnan), Marguerite De La Motte (Constance), Léon Bary (Athos), and Nigel De Brulier (Cardinal Richelieu) would later reprise their roles in The Iron Mask (1929). De Brulier also played Richelieu in The Three Musketeers (1935) and The Man in the Iron Mask (1939).
The world premiere of the film was at the Lyric Theatre in New York on 28 August 1921.
(Daily Star, ((Queens Borough, NY)) 27 August 1921)
Walt Whitman, who plays D'Artagnan's father in this film, portrayed Cardinal Richelieu in the earlier The Three Musketeers (1916). Note: He was not related to the poet Walt Whitman.
This film has a 100% rating based on 11 critic reviews on Rotten Tomatoes.