 The day before his father's death, Louise sent her son to study at the Viadrina University in Brandenburgian Frankfurt/Oder, considered as an act of mistrust by the Imperial court.On the other hand, the regency of the dowager duchess faced the opposition of the Protestant estates of Legnica-Brzeg, thanks to her increasingly open support for the Catholic faith; a major scandal occurred when the young duke's sister Karolina secretly married Frederick, a member of the aristocrat Catholic family of Schleswig-Holstein-Sonderburg-Wiesenburg.The Brandenburg elector reached an understanding with the Habsburg emperor, and in 1673 George William returned to Brzeg, where he received the homage by the estates.