Are both Stephen Roberts and Louis King american film director?
yes
Stephen Roberts (director)
Stephen Roberts (23 November 1895 – 17 July 1936) was an American film director.
 He directed 105 films between 1923 and 1936.
 He was born in Summersville, West Virginia, and died in Los Angeles, California from a heart attack.
Louis King
Louis King (born June 28, 1898, Christiansburg, Virginia – died September 7, 1962) was an American actor and film director of westerns and adventure movies in the 1920s, 1930s, and 1940s.
The Man Who Broke the Bank at Monte Carlo (film)
The Man Who Broke the Bank at Monte Carlo is a 1935 American romantic comedy film made by 20th Century Fox.
 It was directed by Stephen Roberts, and starred Ronald Colman, Joan Bennett, and Colin Clive.
 The screenplay was written by Nunnally Johnson and Howard Smith, based on play by Ilya Surguchev and Frederick Albert Swan.
 The film was inspired by the song of the same name, popularised by Charles Coborn. The Lady Consents
The Lady Consents is a 1936 American melodrama film directed by Stephen Roberts from a screenplay by P. J. Wolfson and Anthony Veiller, from Wolfson's story, "The Indestructible Mrs. Talbot".
 Starring Ann Harding and Herbert Marshall, RKO Radio Pictures released the film on February 7, 1936. The Night of June 13
The Night of June 13 is a 1932 American Pre-Code mystery film directed by Stephen Roberts.
 The film stars Clive Brook, Frances Dee, Charlie Ruggles, Gene Raymond, Lila Lee, Mary Boland and Adrianne Allen.
 The film was released on September 23, 1932, by Paramount Pictures. Fred S. Roberts
Fred Stephen Roberts (born June 19, 1943) is an American mathematician, a professor of mathematics at Rutgers University, and a former director of DIMACS. Wild Money
Wild Money is a 1937 American comedy film directed by Louis King and written by Paul Gallico, Edward T. Lowe, Jr., Marguerite Roberts and Eddie Welch.
 The film stars Edward Everett Horton, Louise Campbell, Lynne Overman, Lucien Littlefield, Esther Dale and Porter Hall.
 The film was released on July 9, 1937, by Paramount Pictures. The Ex-Mrs. Bradford
The Ex-Mrs.
 Bradford is a 1936 American comedy-mystery film.
 William Powell and Jean Arthur star as a divorced couple who investigate a murder at a racetrack.
 This was the last film directed by Stephen Roberts before his untimely death from a heart attack. Young America (1942 film)
Young America is a 1942 American drama film directed by Louis King and written by Samuel G. Engel.
 The film stars Jane Withers, Jane Darwell, Lynne Roberts, Robert Cornell, William Tracy and Roman Bohnen.
 The film was released on February 6, 1942, by 20th Century Fox. If I Had a Million
If I Had a Million is a 1932 American pre-Code Paramount Studios anthology film.
 There were seven directors: Ernst Lubitsch, Norman Taurog, Stephen Roberts, Norman Z. McLeod, James Cruze, William A. Seiter, and H. Bruce Humberstone.
 Lubitsch, Cruze, Seiter, and Humberstone were each responsible for a single vignette, Roberts and McLeod directed two each, and Taurog was in charge of the prologue and epilogue.
 The screenplays were scripted by many different writers, with Joseph L. Mankiewicz making a large contribution.
 "If I Had a Million" is based on a novel by Robert Hardy Andrews.