Law of Guernsey by the Court of Alderney at a special sitting on Saturday 28 January 2017. King John, who reigned from 1199 to 1216, lost the English-controlled territories in Normandy in France following the 1204 Siege of Château Gaillard, the remaining Norman lands being the Channel Islands. King John promised the islands independence and the right to continue governing themselves after they confirmed their allegiance to the English Crown. Agents of the Crown called bailiffs would enforce the laws and run the courts, one in Jersey and one in Guernsey; the areas under the authority of these bailiffs were called bailiwicks. In
Maritime history of the Channel Islands 1790, Guernsey merchants shipped low quality brandy to Madeira, where it was added to their wine to fortify it. Madeira wine becoming famous. Both Islands established Chambers of Commerce as the merchant families expanded and grew in wealth. Tupper, Priaulx, Le Marchant and De Jersey from Guernsey and Ste Croix, Robin, Janvrin and Hemery from Jersey, often intermarrying to avoid rivalry. Part ownership of ships show there were 1,238 people were owners of shares in the 19th Century including 280 mariners and 97 in ship related trades, but also included 55 farmers, 34 widows, 29 spinsters and 25 gentlemen. It