Howard W. Koch
Howard Winchel Koch( April 11, 1916 – February 16, 2001) was an American producer and director of film and television.
Massacre at Marble City
Massacre at Marble City( released in U.K. as Conquerors of Arkansas) is a 1964 German- French- Italian western film directed by Paul Martin and starring Mario Adorf and Brad Harris.
It is loosely based on Friedrich Gerstäcker's 1845 novel" Die Regulatoren von Arkansas".
It was shot on location in Yugoslavia.
Ian Barry (director)
Ian Barry is an Australian director of film and TV.
Rachel Feldman
Rachel Feldman( born August 22, 1954) is an American director of film and television and screenwriter of television films.
Brian Johnson (special effects artist)
Brian Johnson( born 1939 or 1940) is a British designer and director of film and television special effects.
Hanro Smitsman
Hanro Smitsman, born in 1967 in Breda( Netherlands), is a writer and director of film and television.
Where's Charley? (film)
Where's Charley? is a 1952 British musical comedy film directed by David Butler and starring Ray Bolger, Allyn Ann McLerie and Robert Shackleton.
It was an adaptation of the musical" Where's Charley?" which was in turn based on the play" Charley's Aunt" by Brandon Thomas.
Bolger, McLerie and Horace Cooper reprised the performances they originated on Broadway.
Produced by the British branch of Warner Brothers, it was shot at Teddington Studios in London Some scenes were filmed on location in Oxford the setting for the comedy.
The film's sets were designed by the art directors David Ffolkes and Albert Witherick.
It earned an estimated$ 1.5 million at the North American box office in 1952.
David Butler (director)
David Butler (December 17, 1894 – June 14, 1979) was an American actor, film director, film producer, screenwriter, and television director.
Peter Levin
Peter Levin is an American director of film, television and theatre.
Paul Martin (director)
Paul Martin (8 February 1899 – 26 January 1967) was a Hungarian film director and screenwriter who worked for many years in the German film industry.
He directed 60 films between 1932 and 1967.
He was romantically involved with the film star Lilian Harvey and directed her in a number of films until he left her in 1938 for the actress Frauke Lauterbach.
They made one final film "Woman at the Wheel" together during the filming of which their relationship remained cold.

Question: Do director of film Massacre at Marble City and director of film Where's Charley? (film) have the same nationality?
Answer: no