Sibylle of Saxony Duchess of Saxe-Lauenburg (1515-1592) (1515–1592) Parents Catherine of Mecklenburg Henry IV Children Magnus II, Duke of Saxe-Lauenburg Dorothea van Saksen-Lauenburg Henry of Saxe-Lauenburg Maurice, Duke of Saxe-Lauenburg Francis II, Duke of Saxe-Lauenburg Ursula of Saxe-Lauenburg Sidonia Catharina van Saksen Friedrich von Sachsen-Lauenburg Siblings Maurice of Saxony Augustus, Elector of Saxony Severinus of Saxony Emilie of Saxony Sidonie of Saxony Partners Francis I, Duke of Saxe-Lauenburg