Don Juan in a Girls' School
Don Juan in a Girls' School( German: Don Juan in der Mädchenschule) is a 1928 German silent comedy film directed by and starring Reinhold Schünzel.
It is based on Hans Stürm's play" The Unfaithful Eckehart".
The film's art direction was by Gustav A. Knauer and Willy Schiller.
Two later film versions were" The Unfaithful Eckehart"( 1931) and" The Unfaithful Eckehart"( 1940).
The Unfaithful Eckehart (1931 film)
The Unfaithful Eckehart( German: Der ungetreue Eckehart) is a 1931 German comedy film directed by Carl Boese and starring Ralph Arthur Roberts, Fritz Schulz and Paul Hörbiger.
It was remade in 1940.
A silent film was made by Reinhold Schünzel 1928 under the title" Don Juan in a Girls' School".
The Unfaithful Eckehart (1940 film)
The Unfaithful Eckehart  is a 1940 German comedy film directed by Hubert Marischka and starring Hans Moser, Hedwig Bleibtreu and Lucie Englisch.
It is based on Hans Stürm's play of the same title, which had previously been made into a 1928 film and a 1931 film.
The film's sets were designed by the art directors Gabriel Pellon and Heinrich Richter.
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.
The Unfaithful (1947 film)
The Unfaithful is a 1947 film noir directed by Vincent Sherman and starring Ann Sheridan, Lew Ayres and Zachary Scott.
The film is based on the W. Somerset Maugham- penned 1927 play and William Wyler- directed 1940 film," The Letter".
Ian Barry (director)
Ian Barry is an Australian director of film and TV.
Hans Stürm
Hans Stürm( 1874 – 1933) was a German actor, screenwriter and playwright.
He worked with the director Richard Eichberg on a number of films either in acting of scripting roles.
His stage play" The Unfaithful Eckehart" was turned into films in 1931 and 1940.
The Unfaithful Wife
The Unfaithful Wife is a 1969 French crime thriller film directed by Claude Chabrol.
The film had a total of 682,295 admissions in France.
Hubert Marischka
Hubert Marischka (27 August 1882 – 4 December 1959), brother of Ernst Marischka, was an Austrian operetta tenor, actor, film director and screenwriter.
Peter Levin
Peter Levin is an American director of film, television and theatre.

Question: What nationality is the director of film The Unfaithful Eckehart (1940 Film)?
Answer: Austrian