Siemowit of Mazovia took up arms and advanced as far as Kalisz. His supporters assembled in Sieradz in August in order to elect him king, but Archbishop Bodzanta refused to perform his coronation. In a meeting in Kassa, Queen Elizabeth promised the delegates of the Polish provinces to send Jadwiga to Poland before November. The queen mother and the Poles also agreed that if either Jadwiga or Mary died childless, her kingdom would pass to her surviving sister. Siemowit having laid siege to Kalisz, Queen Elizabeth sent Sigismund of Luxemburg at the head of an "improvised army" to Lesser Poland. Siemowit failed to take Kalisz, but news about the appalling behaviour of Sigismund's soldiers increased Sigismund's unpopularity in Poland. Sędziwój Pałuka, who was the castellan of Kalisz and starosta of Kraków, led a delegation to Zadar in Dalmatia to negotiate with Queen Elizabeth, but she had him imprisoned instead. She sent Hungarian soldiers to Poland to garrison them in Wawel Castle in Kraków, but Pałuka escaped and successfully obstructed her soldiers from entering the castle.
Siemowit of Mazovia took up arms and advanced as far as Kalisz. His supporters assembled in Sieradz in August in order to elect him king, but Archbishop Bodzanta refused to perform his coronation. In a meeting in Kassa Queen Elizabeth promised the delegates of the Polish provinces to send Jadwiga to Poland before November. The queen mother and the Poles also agreed that if either Jadwiga or Mary died childless, her kingdom would pass to her surviving sister. Siemowit having laid siege to Kalisz, Queen Elizabeth sent Sigismund of Luxemburg at the head of an "improvised army" to Lesser Poland. Siemowit failed to take Kalisz but news about the appalling behaviour of Sigismund's soldiers increased Sigismund's unpopularity in Poland Sędziwój Pałuka, who was the castellan of Kalisz and starosta of Kraków, led a delegation to Zadar in Dalmatia to negotiate with Queen Elizabeth, but she had him imprisoned instead. She sent Hungarian soldiers to Poland to garrison them in Wawel Castle in Kraków, but Pałuka escaped and successfully obstructed her soldiers from entering the castle.