ボレスワフ4世
The testament however failed to prevent a violent inheritance conflict between Władysław and his younger half-brothers, who allied against him. After his failed bid to take control of the entire Kingdom in 1146, he lost his status as the senior duke, was excommunicated by Archbishop Jakub ze Żnina of Gniezno and fled to the Holy Roman Empire. The duchy was then under control of his half-brother High Duke Bolesław IV the Curly.