John II, Duke of Saxe-Lauenburg

John II of Saxe-Lauenburg was the eldest son of John I of Saxony and Ingeborg Birgersdotter of Småland, a daughter or grandchild of Birger jarl. He ruled Saxony jointly with his uncle Albert II and his brothers Albert III and Eric I, first fostered by Albert II, until coming of age. In 1296 John II, his brothers and their uncle divided Saxony into Saxe-Wittenberg, ruled by Albert II, and Saxe-Lauenburg, jointly ruled by the brothers between 1296 and 1303 and thereafter partitioned among them. John II then ruled the branch duchy of Saxe-Mölln, later extended to become Saxe-Bergedorf-Mölln. In 1314 he officiated as Saxon Prince-elector in an election of a German king.