Who was the King of Poland during the 1100's?
Kingdom of Poland (1025–1385)
Duke Bolesław III the Wrymouth
Duke Bolesław III the Wrymouth, who reigned from 1102 to 1138, tried to end the repeated struggles between various claimants by setting the government of Poland on a more formal footing. In his testament, he divided his lands into five Duchies and distributed them among his sons.