In the 11th century William, Duke of Normandy, led the Norman Conquest of England; after defeating Harold Godwinson at the Battle of Hastings in 1066, William was crowned King of England.

[2] From this point the title was held by William's successors as king of England, until in 1204 when the French seized mainland Normandy, with only the Channel Islands remaining under English rule.

The title Duke of Normandy was then held by a number of French monarchs.

The title was used once more in relation to a British monarch when James II and VII, then James, Duke of York, was referred to as Duke of Normandy by Louis XIV, following the Restoration of the Monarchy.

[6] The king is widely referred to on Jersey and the wider Channel Islands as Duke of Normandy.