Dorothea of Saxe-Lauenburg Queen consort of Denmark and Norway (1511-1571) (1511–1571) Parents Catherine of Brunswick-Wolfenbüttel, Duchess of Saxe-Lauenburg Magnus I, Duke of Saxe-Lauenburg Children Frederick II of Denmark John the Younger, Duke of Schleswig-Holstein-Sonderburg Anne of Denmark, Electress of Saxony Magnus, Duke of Holstein Dorothea of Denmark, Duchess of Brunswick-Lüneburg Siblings Ursula von Sachsen-Lauenburg Catherine of Saxe-Lauenburg Francis I, Duke of Saxe-Lauenburg Sophie of Saxe-Lauenburg Clara of Saxe-Lauenburg Partners Christian III of Denmark