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.
Ian Barry (director)
Ian Barry is an Australian director of film and TV.
Michael Govan
Michael Govan( born 1963) is the director of the Los Angeles County Museum of Art since 2006.
Prior to this, Govan worked as the director of the Dia Art Foundation in New York City.
Tathastu
Tathastu is a 2006 Indian Hindi- language drama film starring Sanjay Dutt and directed by Anubhav Sinha.
It is based on the American film" John Q".
John Donatich
John Donatich is the Director of Yale University Press.
Olav Aaraas
Olav Aaraas( born 10 July 1950) is a Norwegian historian and museum director.
He was born in Fredrikstad.
From 1982 to 1993 he was the director of Sogn Folk Museum, from 1993 to 2010 he was the director of Maihaugen and from 2001 he has been the director of the Norwegian Museum of Cultural History.
In 2010 he was decorated with the Royal Norwegian Order of St. Olav.
John Farrell (businessman)
John Farrell is the director of YouTube in Latin America.
John Loves Mary
John Loves Mary is a 1949 comedy film directed by David Butler and written by Henry Ephron and Phoebe Ephron.
The film stars Ronald Reagan, Patricia Neal and Jack Carson.
The film was released by Warner Bros. on February 19, 1949.
It's based on a Broadway play of the same name written by Norman Krasna, which ran from February 4, 1947, to February 7, 1948 at the Booth Theatre and Music Box Theatre in New York City.
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.

Question: What nationality is the director of film John Loves Mary?
Answer: American