which actor also was a screenwriter, John H. Auer or Pietro Germi?
John H. Auer John H. Auer (August 3, 1906 in Budapest, Hungary – March 15, 1975 in North Hollywood, Los Angeles) was a Hungarian-born child actor who, on coming to the Americas in 1928, became a movie director and producer, initially in Mexico but, from the early 1930s, in Hollywood.
Rudolf Lettinger Rudolf Lettinger (26 October 1865 in Hamburg – 21 March 1937 in Berlin-Schöneberg) was a German stage and film actor. He made his stage debut in 1883 when he played the role of Kosinsky in Friedrich Schiller's drama "The Robbers". Some of his more prominent roles in his prestigious stage career were "Cyrano de Bergerac" and Gessler in "William Tell". He also worked with acclaimed stage director Max Reinhardt. In 1912, Lettinger played his first film role in "Das Geheimnis von Monte Carlo". Lettinger appeared in over 90 films until 1931, mostly as a supporting actor. His best-known film is perhaps "The Cabinet of Dr. Caligari" (1920), where Lettinger portrayed Dr. Olsen.