瓦迪斯瓦夫一世
Between 1312 and 1317, a conflict erupted between Bolesław III and the Dukes of Głogów. Henry and his brother entered into an alliance with the ruler of Lesser Poland, Władysław I the Elbow-high and with their combined forces began an expeditionary trip against Henry III's sons. As a pretext they used the fact that Henry III was directly responsible for the premature death of Henry V (Henry and Bolesław III's father). In the end, Władysław I the Elbow-high managed to capture almost all of Greater Poland, but his allies only took the towns of Uraz (which was given to Henry) and Wołów and Lubiąż (granted to Bolesław III).