James Young
— Beau Brummel
Clara Kimball Young
— Helen Ballarat
Charles Chapman
— The Prince of Wales
Julia Swayne Gordon
— The Duchess
Edwin R. Phillips
— Lord Ballarat (as E.R. Phillips)
James Morrison
— Lord Alvanley
Etienne Girardot
— Isadore - Brummel's Valet
Richard Leslie
— Lord Beaconsfield (as Dick Leslie)
Helene Costello
— Child (uncredited)
