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 French, who were utterly defeated, left eleven thousand dead on the field, of whom 2,426 were men of gentle birth. Nearly a hundred counts, barons, and bannerets and two thousand men-at-arms, besides many others, were made prisoners, and the king and his youngest son, Philip were among those who were taken. The English losses were not large. When King John II was brought to him, the prince received him with respect, helped him to take off his armour, and entertained him and the greater part of the princes and barons who had been made prisoners at supper. He served at