Catherine of Saxe-Lauenburg Queen consort of Sweden (1513–1535) Parents Catherine of Brunswick-Wolfenbüttel, Duchess of Saxe-Lauenburg Magnus I, Duke of Saxe-Lauenburg Children Eric XIV of Sweden Siblings Ursula von Sachsen-Lauenburg Clara of Saxe-Lauenburg Sophie of Saxe-Lauenburg Dorothea of Saxe-Lauenburg Francis I, Duke of Saxe-Lauenburg Partners Gustav I of Sweden