Question: Are both Elia Kazan and Maurice Elvey a filmmaker?

Context articles: A Letter to Elia
Maurice Elvey
Second Fiddle (1957 film)
All My Sons
Mademoiselle from Armentieres (film)
Mr. Wu (1919 film)
Mademoiselle Parley Voo
Maya Kazan
Elia Kazan
Art &amp; Gadg

A Letter to Elia is a 2010 documentary film directed by Kent Jones and Martin Scorsese that follows the life and career of film director Elia Kazan and how he influenced Scorsese.
 Made from clips from films, stills, readings from Kazan's autobiography, a speech he wrote on directing read by Elias Koteas, a videotaped interview done late in Kazan's life, and Scorsese's commentary on and off screen.
Maurice Elvey (11 November 1887 – 28 August 1967) was the most prolific film director in British history.
 He directed nearly 200 films between 1913 and 1957.
 During the silent film era he directed as many as twenty films per year.
 He also produced more than fifty films - his own as well as films directed by others.
Second Fiddle is a 1957 British comedy film directed by Maurice Elvey and starring Adrienne Corri, Thorley Walters, Lisa Gastoni and Richard Wattis.
 The film was produced by Robert Dunbar for Act Films Ltd.
 It was the final film of prolific director Maurice Elvey.
All My Sons is a 1947 play by Arthur Miller.
 It opened on Broadway at the Coronet Theatre in New York City on January 29, 1947, closed on November 8, 1949 and ran for 328 performances.
 It was directed by Elia Kazan (to whom it is dedicated), produced by Elia Kazan and Harold Clurman, and won the New York Drama Critics' Circle Award.
 It starred Ed Begley, Beth Miller, Arthur Kennedy, and Karl Malden and won both the Tony Award for Best Author and the Tony Award for Best Direction of a Play.
 The play was adapted for films in 1949 and 1987.
Mademoiselle from Armentieres is a 1926 British World War I silent drama film directed by Maurice Elvey and starring Estelle Brody, John Stuart and Alf Goddard.
 The film was Elvey's first collaboration with screenwriter Victor Saville.
 It was followed by a 1928 sequel "Mademoiselle Parley Voo".
Mr. Wu is a 1919 British drama film directed by Maurice Elvey and starring Matheson Lang, Roy Royston, Lillah McCarthy and Meggie Albanesi.
 It was based on a 1913 play "Mr. Wu" by Maurice Vernon and Harold Owen.
 During the filming Albanesi became infatuated with Lang.
 The picture was made by Stoll Pictures, and was one of their first major successes.
 Lon Chaney played the title role in a 1927 remake.
 The screenplay concerns a Chinese Mandarin who murders his daughter.
Mademoiselle Parley Voo is a 1928 British silent drama film directed by Maurice Elvey and starring Estelle Brody, John Stuart and Alf Goddard.
 It was made as a sequel to Elvey's earlier hit "Mademoiselle from Armentieres" (1926), and was equally successful.
 Both films refer to the popular First World War song "Mademoiselle from Armentières".
 It was made at Lime Grove Studios in Shepherd's Bush.
Maya Kazan (born November 24, 1986) is an American stage, TV and film actress and director.
 She is known for playing Caroline in "Frances Ha", Eleanor Gallinger on "The Knick" and Mabel Thompson on "Boardwalk Empire".
 She is the daughter of screenwriters Nicholas Kazan and Robin Swicord.
 She is the granddaughter of film director Elia Kazan and playwright Molly Kazan.
 Maya is the younger sister of actress Zoe Kazan.
Elia Kazan (born Elias Kazantzoglou September 7, 1909 – September 28, 2003) was a Greek-American director, producer, writer and actor, described by "The New York Times" as "one of the most honored and influential directors in Broadway and Hollywood history".
Art & Gadg is an original radio play by Gregory Evans about the relationship between Arthur Miller (Art) and Elia Kazan (Gadg short for gadget, a nickname of Kazan).
 The 45-minute play was first transmitted on BBC Radio 4 15 January 2013.
 It was directed by Marc Beeby.