For 10 points, name this man who became king of England upon his defeat of Harold Godwinson at the Battle of Hastings.
This man faced the rebellion of Waltheof, Roger de Breteuil and Ralph de Guader after he defeated his cousin Gui of Brionne at the Battle of Val-es-Dunes. He gathered a war council at Lillbonne before amassing his army at Saint-Valery-sur-Somme, eventually resulting in a landing at Pevensey. The son of Herlette of Falaise and Robert the Magnificent, this man had the Tower of London constructed and commissioned the Domesday Book. For 10 points, name this man who became king of England upon his defeat of Harold Godwinson at the Battle of Hastings.
This man faced the rebellion of Waltheof, Roger de Breteuil and Ralph de Guader after he defeated his cousin Gui of Brionne at the Battle of Val-es-Dunes.
{William} the {Conqueror} [or {William} I of England]