Ian Barry (director)
Ian Barry is an Australian director of film and TV.
Eric Wickman
Carl Eric Wickman( August 7, 1887 – February 5, 1954) was the founder of the Greyhound Lines
John Farrell (businessman)
John Farrell is the director of YouTube in Latin America.
Eric Chan
Eric Chan Kwok- ki, SBS, IDSM( born 1959) is a Hong Kong civil servant who is the Director of the Chief Executive's Office.
Previously, Chan was the Director of Immigration( 2011–2016).
Dana Blankstein
Dana Blankstein- Cohen( born March 3, 1981) is the director of the Israeli Academy of Film and Television.
She is a film director, and an Israeli culture entrepreneur.
Peter Levin
Peter Levin is an American director of film, television and theatre.
Howard Bretherton
Howard Bretherton (13 February 1890, Tacoma, Washington – 12 April 1969, San Diego, California) was an American film director, film editor, and the father of film editor David Bretherton.
Michael Govan
Michael Govan( born 1963) is the director of the Los Angeles County Museum of Art since 2006.
Prior to this, Govan worked as the director of the Dia Art Foundation in New York City.
Laurent Le Bon
Laurent Le Bon( born 2 April 1969) is a French art historian who is the director of the Musée Picasso.
The Greyhound Limited
The Greyhound Limited is 1929 part-talkie crime drama and railroad theme film directed by Howard Bretherton and starring Monte Blue.
Warner Bros. produced and distributed releasing the film in the Vitaphone process, with a music score and sound effects.
The film is a follow up to the 1927 film "The Black Diamond Express".
The film survives in the Library of Congress and Wisconsin Center For Film and Theatre Research, Madison Wisconsin.
The full synchronized soundtrack (except the 5, 7 and 8 reel) survives on Vitaphone discs.

Question: Who is the child of the director of film The Greyhound Limited?
Answer: David Bretherton