History of Guernsey 933 when the islands, came under the control of William Longsword, son of Rollo the first Duke of Normandy, having been annexed from the Duchy of Brittany by the Duchy of Normandy. The island of Guernsey and the other island in the Channel Islands represent the last remnants of the medieval Duchy of Normandy. In the islands, Elizabeth II's traditional title as head of state is Duke of Normandy. (The masculine nomenclature "Duke" is retained even when the monarch is female.) According to tradition, Robert I, Duke of Normandy (the father of William the Conqueror) was journeying to England in
Bailiwick of Guernsey government. All three legal jurisdictions need Royal Assent from the Privy Council on its primary legislation. Each jurisdiction raises its own taxation, although in 1949 Alderney transferred its rights to Guernsey. The island of Guernsey has a population of around 63,000 in and forms the legal and administrative centre of the Bailiwick of Guernsey. The parliament of Guernsey and of the nearby inhabited islands of Herm, Jethou and Lihou is the States of Guernsey. With a population of around 1,900 in , Alderney has its own parliament, the States of Alderney, which has ten elected members and an elected president.