Battle of Hastings. William the Conqueror Defeats Harold’s Saxons. Normans came from Vikings. Centuries of Viking Invasions end in English Defeat.
Political/genealogical considerations being secondary to military ones, the invasion of England by Normandy, the Battle of Hastings, and the subsequent conquest of England by the William the Conqueror, the Duke of Normandy and then the King of England, is one of the celebrated stories of the Medieval Age.
Story told by the great Edward Creasy: http://dld.bz/fDqFY