Kirsten Heiberg was automatically a German citizen when she married Franz Grothe in Oslo in May 1938 This was very important to her as German authorities insisted on the fact that only German citizens could be members of the Filmkammer which again was neccessary to obtain permission to act Non members of the Filmkammer could normally not get permission to act in German films For her first three films Kirsten Heiberg was given special contract giving her a much lower salary than Filmkammer members were given