Henry I of France whose death Henry was left to deal with his rebel sibling. In 1032, he placated his brother by giving him the duchy of Burgundy which his father had given him in 1016. In an early strategic move, Henry came to the rescue of his very young nephew-in-law, the newly appointed Duke William of Normandy (who would go on to become William the Conqueror), to suppress a revolt by William's vassals. In 1047, Henry secured the dukedom for William in their decisive victory over the vassals at the Battle of Val-ès-Dunes near Caen; however, Henry would later support the barons against
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