Sigismund of Brandenburg Archbishop of Magdeburg and Administrator of Halberstadt (1538-1566) (1538–1566) Parents Hedwig Jagiellon, Electress of Brandenburg Joachim II Hector, Elector of Brandenburg Children Siblings Frederick of Brandenberg John George, Elector of Brandenburg Elisabeth Magdalene von Brandenburg Barbara of Brandenburg, Duchess of Brieg Hedwig of Brandenburg, Duchess of Brunswick-Wolfenbüttel Sophie of Brandenburg