Duke of Aquitaine House of Valois claimed supremacy over Aquitaine. In 1360, both sides signed the Treaty of Bretigny, in which Edward renounced the French crown but remained sovereign Lord of Aquitaine (rather than merely duke). However, when the treaty was broken in 1369, both these English claims and the war resumed. In 1362, King Edward III, as Lord of Aquitaine, made his eldest son Edward, Prince of Wales, Prince of Aquitaine. In 1390, King Richard II, son of Edward the Black Prince appointed his uncle John of Gaunt Duke of Aquitaine. This grant expired upon the Duke's death, and the dukedom reverted
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