John II, Duke of Saxe-Lauenburg German Duke (1275–1322) Parents John I, Duke of Saxony Ingeborg Birgersdotter of Bjelbo Children Albert IV, Duke of Saxe-Lauenburg Siblings Helena of Saxe-Lauenburg Albert III, Duke of Saxe-Lauenburg Eric I, Duke of Saxe-Lauenburg Elisabeth von Sachsen-Lauenburg Partners Elizabeth of Holstein-Rendsburg