 The Emperor, increasingly sure he would gain the property back, was now willing to pass it to his putative father-in-law.Bolko II's biggest asset, however, proved to be the acquisition, together with the Emperor on 14 April 1364, of the large town and lands near Łużyce for the enormous sum of 21,000 fine silver, which became one of the most important and prestigious of his possessions.In 1364 he was one of the monarchs invited to the Congress of Cracow, where he took part in the famous "Wierzynek Feast", where, along with the host, King Casimir III of Poland, he also assisted the Kings Louis I of Hungary, Valdemar III of Denmark and Peter I of Cyprus; and the Dukes Otto of Bavaria, Władysław of Opole and Bogislaw V of Pomerania-Stolp (Słupsk).