Władysław III of Poland
King Albert's widow, Elizabeth of Luxembourg after the coronation of his son, Ladislaus the Posthumous at Székesfehérvár went to Győr in May 1440 and summoned Jiskra and his Czech mercenaries there as well. From there Jiskra accompanied the King, his mother and the Holy Crown of Hungary to Pozsony (Bratislava). After this Jiskra, who was bestowed upon by the queen dowager with the High Captaincy of the mining towns of Upper Hungary and Kassa (Košice) as well as Zólyom Castle (Pustý hrad) remained a supporter of the young Ladislaus V against King Władysław III of Poland and the estates of Hungary.