 The Channel Islands became part of the "Lugdunensis secunda" ("Lyonnaise" 2nd), then a dependence of the bishopric of Coutances (until the 16th century), itself in the archbishopric of Rouen, having about the same limits as the "Lyonnaise" 2nd.In 933, it was included in the Duchy of Normandy, based on the traditional boundaries of the "Lugdunensis secunda" and the archbishopric of Rouen.Following the Norman conquest of England in 1066, the island was united with the Crown of England.