The Tsarevich (1933 film)
The Tsarevich (German: Der Zarewitsch) is a 1933 German historical musical film directed by Victor Janson and starring Mártha Eggerth, Hans Söhnker and Ery Bos.
It is based on the 1927 operetta "Der Zarewitsch" by Franz Lehar.
It was one of a number of operetta film that Eggerth appeared in during the decade.
The film's sets were designed by Walter Haag and Franz Schroedter.
A separate French-language version  was also released.
Donald Macardle
Donald Macardle was an Irish film and stage actor and writer.
He also directed the 1933 film" The King's Cup".
Hanro Smitsman
Hanro Smitsman, born in 1967 in Breda( Netherlands), is a writer and director of film and television.
Victor Janson
Victor Arthur Eduard Janson (25 September 1884 – 29 June 1960) was a Latvian-born German stage and film actor and film director.
Johann Alexander Hübler-Kahla
Johann Alexander Hübler-Kahla (23 June 1902 – 6 April 1965) was an Austrian screenwriter, film producer and director.
He directed seventeen films including the musical comedy "Dance Music" (1935) and the Karl May adaptation "Across the Desert" (1936).
Peter Levin
Peter Levin is an American director of film, television and theatre.
Brian Johnson (special effects artist)
Brian Johnson( born 1939 or 1940) is a British designer and director of film and television special effects.
The Violet of Potsdamer Platz
The Violet of Potsdamer Platz (German: Das Veilchen vom Potsdamer Platz) is a 1936 German drama film directed by Johann Alexander Hübler-Kahla and starring Rotraut Richter, Paul W. Krüger and Margarete Kupfer.
Howard W. Koch
Howard Winchel Koch( April 11, 1916 – February 16, 2001) was an American producer and director of film and television.
Ian Barry (director)
Ian Barry is an Australian director of film and TV.

Question: Do director of film The Tsarevich (1933 Film) and director of film The Violet Of Potsdamer Platz have the same nationality?
Answer: no