Jan I of Żagań Duke of Żagań (1385–1439) Parents Katharina of Opole Henry VIII the Sparrow Children Anna, Herzogin von Schlesien-Glogau in Sagan Jan II the Mad, duke of Żagań Wenceslaus of Żagań Rudolf of Żagań Balthasar of Żagań Margaret von Schlesien-Sagen Hedwig von Sagan Siblings Henry IX the Older Wenceslaus of Krosno Henry X Rumpold Anna żagańska Partners Scholastika of Saxe-Wittenberg