The Prisoners of Shanghai (German: Die Gefangene von Shanghai) is a 1927 German silent drama film directed by Géza von Bolváry and Augusto Genina and starring Carmen Boni, Jack Trevor and Bernhard Goetzke.
 The film's sets were designed by Stefan Lhotka.
My Daughter's Tutor (German: Der Erzieher meiner Tochter) is a 1929 German silent comedy film directed by Géza von Bolváry and starring Harry Liedtke, Dolly Davis and Charles Puffy.
 The plot closely mirrored that of Ernst Lubitsch's "The Oyster Princess".
 The film's art director was Robert Neppach.
Father and Son (German:Vater und Sohn) is a 1929 German silent film directed by Géza von Bolváry and starring Harry Liedtke, Rolf von Goth and Charles Puffy.
 The film's art direction was by Robert Neppach and Erwin Scharf.
Helene von Bolvary (1892–1943) was a Hungarian actress.
 She was the wife of the film director Géza von Bolváry.
The Love of the Bajadere (German: Die Liebe der Bajadere) is a 1926 German silent film directed by Géza von Bolváry and starring Helene von Bolvary.
Mirror of Life (German:Spiegel des Lebens) is a 1938 Austrian drama film directed by Géza von Bolváry and starring Peter Petersen, Paula Wessely and Attila Hörbiger.
 The film's sets were overseen by art director Julius von Borsody.
The Merry Wives of Vienna (German:Die lustigen Weiber von Wien) is a 1931 German musical comedy film directed by Géza von Bolváry and starring Willi Forst, Lee Parry and Paul Hörbiger.
 The film's sets were designed by Andrej Andrejew and  Gabriel Pellon.
Géza von Bolváry (full name Géza Maria von Bolváry-Zahn; 26 December 1897 – 10 August 1961) was a Hungarian actor, screenwriter and film director, who worked principally in Germany and Austria.
Vincent Kok Tak-Chiu (born 15 August 1966) is a Hong Kong actor, scriptwriter and film director.
The Vagabond Queen is a 1929 British comedy film directed by Géza von Bolváry and starring Betty Balfour, Glen Byam Shaw and Ernest Thesiger.
 It was the final film directed in Britain by Bolváry before he returned to Germany.
 It was made by British International Pictures.
 A young woman takes the place of a Princess who is a target for an assassination.

Question: Do Géza von Bolváry and Vincent Kok have the same nationality?
Answer: no