Flag of Jersey
The flag of the island of Jersey is the result of a mistake. On a Dutch flag chart, a white flag with a red saltire appeared, marked ‘lerse Vlag’. Someone read this as “Jersey Flag”, but it meant “Irish Flag”. Since then it has been accepted as the flag of the island. For a long time the flag was the plain red saltire on white. More recently a shield has been added with the ancient arms of the Duchy of Normandy. The Channel Isles were part of Normandy, and are the only part which remains under United Kingdom rule.
The ratio of the flag is 2:3.