Ivan's Sister is identified in the cast as Ivan and Gregori's sister, making her a member of the Potowski family. The available plot summary does not provide her personal name, describe her actions, or explain how she relates to the conflict suggested by the film's title.
Inga is Professor Manini's daughter and Felix's cousin. She loves Felix, but he is preoccupied with his hopeless love for Ysabel instead. The resulting romantic entanglement forms part of the story's central relationships, although the summary gives no further actions for Inga.
Lilly Jacobson has 24 screen credits in a career dating back to 1910. Their work is anchored in the Maharadjahens yndlingshustru universe with 2 titles. Signature works include For the Fatherland, Story of a Girl from the Archipelago, The Green Necklace. Explore the interactive character relationship maps on each title page to trace how their roles connect across franchises.
Related entry on Wikidata (Q4956135), public domain (CC0).