Anna of Brandenburg duchess of Mecklenburg (1507–1567) Parents Elizabeth of Denmark, Electress of Brandenburg Joachim I Nestor, Elector of Brandenburg Children Charles I Anna of Mecklenburg Ulrich, Duke of Mecklenburg John Albert I, Duke of Mecklenburg Christopher, Duke of Mecklenburg Georg von Mecklenburg Siblings Joachim II Hector, Elector of Brandenburg John, Margrave of Brandenburg-Küstrin Elisabeth of Brandenburg, Duchess of Brunswick-Calenberg-Göttingen Margaret of Brandenburg Partners Albrecht VII, Duke of Mecklenburg