プシェミスウ2世
It is not known exactly when the negotiations began between Przemysł II and Wenceslaus II. They certainly ended between 6 January (the last time when Przemysł II used the title of Duke of Kraków in a document) and 10 April 1291 (the first time when Wenceslaus II used this title in charters). In addition, it is also known that by mid-April Bohemian troops led by Bishop Arnold of Bamberg were already at Wawel castle.