Were both Stuart Paton and Ivan Perestiani  Russian film directors?
Stuart Paton Stuart Paton (23 July 1883 – 16 December 1944) was a British director, screenwriter and actor of the silent era. He directed 67 films between 1915 and 1938. He also wrote for 24 films between 1914 and 1927. Despite a sizable list of credits, Paton was never well-regarded, especially as a director.
The Hope Diamond Mystery The Hope Diamond Mystery is a 1921 American action film serial directed by Stuart Paton and featuring Boris Karloff. The film survives with a copy at the Library of Congress.