Albert IV, Duke of Saxe-Lauenburg
Albert IV of Saxe-Lauenburg was the eldest son of John II of Saxe-Lauenburg and Elisabeth of Holstein-Rendsburg, sister of Gerard III the Great. In 1321 Albert IV succeeded his father as Duke of Saxe-Bergedorf-Mölln, a branch duchy of Saxe-Lauenburg, while his mother served as regent, before she remarried Eric Christoffersen, a son of King Christopher II and co-ruler in Denmark.Albert married twice, in 1334 Beata of Schwerin, daughter of Gunzelin VI, Count of Schwerin, and in 1341 Sophia of Werle-Güstrow, daughter of Lord John II of Werle-Güstrow. Both wives also officiated as Saxon consorts. With Beata Albert had the following children:
