Charles IV Holy Roman Emperor (1316–1378) Parents Elizabeth of Bohemia John of Bohemia Children Margaret of Bohemia, Queen of Hungary Wenceslaus IV of Bohemia Sigismund Catherine of Bohemia Margaret of Bohemia, Burgravine of Nuremberg John of Görlitz Anne of Bohemia Karel of Bohemia Elisabeth of Bohemia Siblings Wenceslaus I, Duke of Luxembourg Anne of Bohemia, Duchess of Austria Bonne de Luxembourg John Henry Nicolaus of Luxemburg Margaret of Bohemia, Duchess of Bavaria Partners Blanche of Valois Elizabeth of Pomerania Anna von Schweidnitz Anne of Bavaria