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Schell's brother, Paul Rudolf (born 1940), now known as Paul von Schell, has acted in a number of German-language productions. A younger brother, Peter (1941–68), died young. Through a German great-grandfather, Schell is related to Louis XIV of France (1638–1715), Philip II, Duke of Orléans (1674–1723), Regent of France and Francis I, Holy Roman Emperor (1708–65). She is not believed to be related to the Austrian-Swiss actors Maximilian and Maria Schell.