 At the head of the revolt was Albert, the mayor of Krakow, who called to the city Duke Bolko I of Opole.The rebels managed to control Krakow and gain the support of several other cities in Lesser Poland, but Wawel was saved by troops loyal to Władysław, which made the chances of a successful rebellion questionable.The situation had not changed when the Duke of Opole arrived in April 1312.