Dukedoms of the British Isles by reign Dukedoms of the British Isles by reign This page lists extant dukedoms in the Peerages of the British Isles, listed by the monarch who created them—see also List of dukedoms in the peerages of Britain and Ireland. King Edward III first created the title Duke of Cornwall, the first dukedom in the British Isles, for his son and heir Edward, called the Black Prince. Since 1421 the title has automatically been held by the eldest son of and heir apparent to the sovereign. Since his mother's taking the throne in 1952 the title has been held by Prince Charles, who
Edward III of England Edington and Chief Justice William de Shareshull. It was not until the mid-1350s that military operations on the Continent were resumed on a large scale. In 1356, Edward's eldest son, Edward, the Black Prince, won an important victory in the Battle of Poitiers. The greatly outnumbered English forces not only routed the French, but captured the French king, John II and his youngest son, Philip. After a succession of victories, the English held great possessions in France, the French king was in English custody, and the French central government had almost totally collapsed. There has been a historical debate as