Christian William of Brandenburg Administrator of bishoprics of Magdeburg and Halberstadt (1587–1665) Parents Catherine of Brandenburg-Küstrin Joachim Frederick, Elector of Brandenburg Children Sophie Elisabeth of Brandenburg Siblings Anne Catherine of Brandenburg August of Brandenburg Marie Eleonore von Brandenburg Ernst John Sigismund, Elector of Brandenburg John George of Brandenburg Joachim of Brandenburg Albrecht Frederik van Brandenburg Barbara Sophie of Brandenburg Partners Barbara Eusebia von Martinic Dorothea von Braunschweig-Wolfenbüttel Maximiliana of Salm-Neuburg