The war broke lasted five years (1312–1317); finally Władysław I Łokietek managed to take almost all Greater Poland, but his allies only taken the towns of Uraz (to Henry VI), and Wołów and Lubiąż (to Bolesław).
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In 1328, John supported the inhabitants of Brzeg-Legnica in the fight against Bolesław III the Generous and Henry VI the Good; however, this war caused significant areas of devastation outside Lower Silesia.
Margaret of Bohemia, Duchess of Wroclaw, daughter of Wenceslaus II of Bohemia and Judith of Habsburg, married Bolesław III the Generous