Johann Siegmund Elector of BRANDENBURG
He married Anna Princess of Prussia, Electress of Brandenburg 30 Oct 1594 at Königsberg, Ostpreussen, Prussia . Anna Princess of Prussia, Electress of Brandenburg was born at Königsberg, Ostpreussen, Prussia 3 Jul 1576 daughter of Albrecht Frederick of Prussia and Marie Eleonore, Princess of JÜLICH-Kleve-Berg .
They were the parents of 1
child:
Georg Wilhelm Elector of Brandenburg
born 1595.
Johann Siegmund Elector of Brandenburg died 1619 .
Anna Princess of Prussia, Electress of Brandenburg died 30 Aug 1625 at Berlin, Brandenburg, Prussia .