At this time there was a great ecclesiastical council in Constance on the Boden Lake, which lasted from 1414 till 1418 years and gathered a great number of ecclesiastical and secular nobility from Catholic countries. Parliament dealt with the so-called Western Schism, and the fate of Jan Hus that was eventually put to death (6 July 1415), which led to Hussite Wars. In addition, it is pointed out and the threat of the Ottomans, among the participants of Parliament, was also a mission of the Serbian Despot, and it is not impossible that he went there.