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 Germans and the first division of the army which followed were thrown into disorder; then the English force in ambush charged the second division on the flank, and as it began to waver the English men-at-arms mounted their horses, which they had kept near them, and charged down the hill. The prince kept Chandos by his side, and his friend did him good service in the fray. As they prepared to charge he cried: "John, get forward; you shall not see me turn my back this day, but I will be ever with the foremost", and then he shouted to