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 the Black Prince Renowned Son, Edward, Prince of Wales and of Aquitain, Sirnamed the Black-Prince". The origins of the name are uncertain, though many theories have been proposed. These fall under two main heads: The black field of his "shield for peace" is well documented (see Arms and heraldic badge above). However, there is no sound evidence that Edward ever wore black armour, although John Harvey (without citing a source) refers to "some rather shadowy evidence that he was described in French as clad at the battle of Crécy ' "en armure noire en fer bruni" ' – in black armour of burnished