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
Law of Guernsey of Guernsey) Law, 1973" allowing EU regulations to have immediate effect in Guernsey. Additional effects on Guernsey followed the Treaty of Maastricht,1992, the Treaty of Amsterdam,1997, the Treaty of Nice, 2001 and the Treaty of Lisbon, 2004. Amongst other matters, the Bailiwick has fiscal autonomy, but has accepted European human rights in 1971. Whilst it is a strong constitutional convention that the UK does not normally legislate for the Crown Dependencies without the explicit consent of their Governments, in law it does have the power to do so. This may be done in two ways. Historically, Acts of Parliament might