[3] His second wife, Hertha Feiler, whom he married shortly after, had a Jewish grandfather, a fact that caused Rühmann problems with the Nazi cultural authorities.In 1941, under the direction of Reichsfilmkammer president Carl Froelich, Rühmann played the title role in Der Gasmann, about a gas-meter reader who is suspected of foreign espionage.[4] Rühmann was a favorite actor of Holocaust diarist Anne Frank, who pasted his picture on the wall of her room in her family's hiding place during the war, where it can still be seen today.[5] The enormous range of Rühmann's popularity during the Nazi era is illustrated by the fact that he was also a favorite actor of Adolf Hitler and his propaganda minister Joseph Goebbels.Rühmann was also the leading man in the 1960 film version of The Adventures of the Good Soldier Schweik, after the novel by Czech author Jaroslav Hašek.In 1965, Rühmann was brought to Hollywood by producer Stanley Kramer for a supporting role as a German Jew in his all-star movie Ship of Fools.