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
External relations of Guernsey aim is to "promote the harmonious and mutually beneficial development of the totality of relationships among the peoples of these islands". In September 2015 there was a meeting with Nicola Sturgeon. Guernsey has formed part of the British–Irish Council since it was formed in 1999, as does Northern Ireland. Meetings take place twice a year, in 2004, 2010 and 2014 the meetings have taken place in Guernsey. Its stated aim is to "promote the harmonious and mutually beneficial development of the totality of relationships among the peoples of these islands". Guernsey has entered into Tax Information Exchange Agreements with most