Being part of Neustria – a diminution of West-France – Jersey was originally part of the Kingdom of France, and not linked to the British Crown as today. During the reign of Charles III the Simple, Normandy was yielded to Rollo, the leader of the Normans at the time, held in fief to the Crown of France, with the title of Dukes. The Channel Islands remained politically linked to Brittany until 933, when William Longsword, Duke of Normandy seized the Cotentin and the islands and added them to his domain. The island, along with the rest of Normandy, was distinct from the Crown of France, which only had limited rights in the province.