Bailiwick of Guernsey history of the Bailiwick of Guernsey goes back to 933, when the islands came under the control of William Longsword, having been annexed from the Duchy of Brittany by the Duchy of Normandy. The island of Guernsey and the other Channel Islands formed part of the lands of William the Conqueror. In 1204 France conquered mainland Normandy – but not the offshore islands of the bailiwick. The islands represent the last remnants of the medieval Duchy of Normandy. Initially there was one governor, or co-governors working together, of the islands making up the Channel Islands. The title "Governor" has changed
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.