Catharina Frederiksdatter Abt 1491 - Abt 1534 Parents Catharina Frederick I of Denmark Children Jacob Hoyer Margaretha Hoyer Siblings Christian III of Denmark Adolf I, Duke of Schleswig-Holstein-Gottorp John II, Duke of Schleswig-Holstein-Haderslev Dorothea of Denmark, Duchess of Mecklenburg Elizabeth of Denmark, Duchess of Mecklenburg Geseke Frederiksdatter Frederick of Denmark Anna of Denmark Dorothea of Denmark Partners Hermann 'Lange Harmen' Hoyer