Biography in: John Wakeman, editor. "World Film Directors, Volume One, 1890-1945". Pages 441-446. New York: The H.W. Wilson Company, 1987.
Directed 2 actors to Oscar nominations: Richard Widmark (Best Supporting Actor, Kiss of Death (1947)), and John Wayne (Best Actor, True Grit (1969)). Wayne won an Oscar for his performance.
Hathaway's grandfather was commissioned to acquire the Sandwich Islands (Hawaii) by the King of Belgians, hence Hathaway inherited the title Marquis.
Hathaways was shooting a scene on location on Wall Street in New York City. Many of the windows in the adjoining buildings were filled with office workers leaning out to watch the filming going on below them. Hathaway got so frustrated with all the attendant noise that he finally leaped out of his director's chair, looked upwards at the crowds and yelled, "God damn it, I don't look over your shoulders when you work!".
Son of actress Jean Hathaway and actor Rhody Hathaway.