Question: Are Mervyn LeRoy and Nicholas Ray  both American film directors ?

Context articles: Macao (film)
Sol Polito
Mervyn LeRoy
W-L Ranch Co.
Warner LeRoy
Local Boy Makes Good
Waterloo Bridge (1940 film)
Nicholas Ray
Latin Lovers (1953 film)
Little Women (1949 film)

Macao is a 1952 black-and-white film noir adventure directed by Josef von Sternberg and Nicholas Ray.
 Producer Howard Hughes fired director von Sternberg during filming and hired Nicholas Ray to finish it.
 The drama features Robert Mitchum, Jane Russell, William Bendix, and Gloria Grahame.
Sol Polito, A.S.C. (born Salvatore Polito, November 12, 1892 — May 23, 1960) was an American cinematographer.
 He is best known for his work with directors Michael Curtiz and Mervyn LeRoy at Warner Bros. studios in the 1930s and 1940s.
Mervyn LeRoy (October 15, 1900 – September 13, 1987) was an American film director, film producer and occasional actor.
W-L Ranch Co. was an American Thoroughbred horse racing and breeding partnership between Hollywood film studio executive Harry M. Warner and film director Mervyn LeRoy.
 Warner's daughter, Doris, was married to Mervyn LeRoy.
Warner LeRoy (March 3, 1935 – February 22, 2001), was a New York businessman.
 LeRoy was the son of film producer-director Mervyn LeRoy and Mervyn's second wife, Doris Warner, and was the grandson of Harry Warner, one of the founders of Warner Bros. and a major contributor to the development of the film industry.
Local Boy Makes Good is a 1931 American Pre-Code comedy film directed by Mervyn LeRoy and written by Robert Lord, Raymond Griffith and Ray Enright.
 The film stars Joe E. Brown, Dorothy Lee, Ruth Hall, Edward Woods, Edward Nugent and Wade Boteler.
 The film was released by Warner Bros. on November 27, 1931.
Waterloo Bridge is a 1940 remake of the 1931 American drama film also called "Waterloo Bridge", adapted from the 1930 play "Waterloo Bridge".
 In an extended flashback narration, it recounts the story of a dancer and an army captain who meet by chance on Waterloo Bridge.
 The film was made by Metro-Goldwyn-Mayer, directed by Mervyn LeRoy and produced by Sidney Franklin and Mervyn LeRoy.
 The screenplay is by S. N. Behrman, Hans Rameau and George Froeschel, based on the Broadway drama by Robert E. Sherwood.
 The music is by Herbert Stothart and cinematography by Joseph Ruttenberg.
Nicholas Ray (born Raymond Nicholas Kienzle Jr., August 7, 1911 – June 16, 1979) was an American film director best known for the movie "Rebel Without a Cause."
Latin Lovers is a Technicolor 1953 romantic musical comedy film made by MGM.
 It was directed by Mervyn LeRoy, and written by Isobel Lennart.
 The music score is by Nicholas Brodszky, and the cinematographer was Joseph Ruttenberg.
Little Women is a 1949 American feature film with script and music taken directly from the earlier 1933 Hepburn version.
 Based on Louisa May Alcott's novel of the same name, it was filmed in Technicolor and directed by Mervyn LeRoy.
 The screenplay was written by Sally Benson, Victor Heerman, Sarah Y. Mason, and Andrew Solt.
 The original music score was composed by Adolph Deutsch and Max Steiner.
 The film also marked the American film debut of Italian actor Rossano Brazzi.
 Sir C. Aubrey Smith, whose acting career had spanned four decades, died in 1948; "Little Women" was his final film.