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
States of Guernsey States of Guernsey The States of Guernsey () is the parliament of the British Crown dependency of Guernsey. Some laws and ordinances approved by the States of Guernsey also apply to Alderney and Sark (the other component parts of the Bailiwick of Guernsey) as "Bailiwick-wide legislation" with the consent of the governments of those islands. All enactments of the States of Guernsey apply to Herm as well as Guernsey, since Herm is wholly owned by the States of Guernsey. When constituted as a legislature, it is officially called the "States of Deliberation". When constituted as an electoral college, it is