Alan IV, Duke of Brittany of William the Bastard, Duke of Normandy (later to become known as William the Conqueror) support of rebels in Brittany against Alan's maternal uncle, Conan II. Conan II died in late 1066 during a campaign in Anjou, and was succeeded by Alan's parents, Conan's sister Hawise and her husband Hoel II. Hoel ruled as regent from Hawise's death in 1072 until Alan reached his majority in 1084. To prevent further hostilities during his invasion of England, William I married his daughter Constance to the new duke Alan in 1087. The marriage ceremonies may have taken place in Bayeux in Normandy.
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