William the Conqueror eldest son. William was the son of the unmarried Robert I, Duke of Normandy, by Robert's mistress Herleva. His illegitimate status and his youth caused some difficulties for him after he succeeded his father, as did the anarchy that plagued the first years of his rule. During his childhood and adolescence, members of the Norman aristocracy battled each other, both for control of the child duke and for their own ends. In 1047 William was able to quash a rebellion and begin to establish his authority over the duchy, a process that was not complete until about 1060. His marriage
George William, Elector of Brandenburg and signed the Peace of Prague with Emperor Ferdinand II on 30 May 1635. Leaving Schwarzenberg in charge of the government, George William withdrew in 1637 to the relatively safe region of Ducal Prussia, where he lived in retirement until his death at Königsberg in Prussia in 1640. [aged 45] George William, Elector of Brandenburg George William (; 13 November 1595 – 1 December 1640), of the Hohenzollern dynasty, was margrave and elector of Brandenburg and duke of Prussia from 1619 until his death. His reign was marked by ineffective governance during the Thirty Years' War. He was the father