Do filmm directors Joseph L. Mankiewicz and Berthold Viertel share the same nationality?
Berthold Viertel Berthold Viertel (28 June 1885 - 24 September 1953) was an Austrian screenwriter and film director notable for his work in Germany, Britain and the United States.
Frank Wisbar Frank Wisbar (born Franz Wysbar 9 December 1899 – 17 March 1967) was a German film director and screenwriter. He directed more than 20 films between 1932 and 1967 in Germany and the United States, as well as amassing many television credits. He was a member of the jury at the 10th Berlin International Film Festival.