1.1 Douglas (1883–1939); born Douglas Elton Ulman. He cofounded United Artists in 1919 and became known for his swashbuckling roles in such silent movies as The Mark of Zorro (1920), Robin Hood (1922), and The Thief of Baghdad (1924).
1.2 Douglas, Jr. (1909–2000); born Douglas Elton Ulman Fairbanks. The son of Douglas, several of his roles were also in the swashbuckling tradition. Notable movies: The Prisoner of Zenda (1937), The Corsican Brothers (1941), and That Lady in Ermine (1948).