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Son of Johann Sigismund von Brandenburg, Kurfürst und Markgraf von Brandenburg, Herzog in Preußen and Anna of Hohenzollern Brother of Georg Wilhelm von Brandenburg, Kurfürst zu Brandenburg Herzog in Preußen; Maria Eleonora Vasa, of Brandenburg, Queen Consort of Sweden; Katharina of Brandenburg and Preussia, Princess of Transsylvania, Princess of Saxe-Lauenburg; Princess Anna Sophia of Brandenburg; Joachimas Zigmantas Brandenburgietis and 2 others; Agnesė Brandenburgietė and Jonas Frydrichas Brandenburgietis « less