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 he was taking into his pay. While his army was assembling he remained at Angoulême, and was there visited by Peter. He then stayed over Christmas at Bordeaux, for his wife, Joan, was there brought to bed of her second son Richard (the next king of England). The Black Prince left Bordeaux early in February 1367, and joined his army at Dax, where he remained three days, and received a reinforcement of four hundred men-at-arms and four hundred archers sent out by his father under his brother John, duke of Lancaster. From Dax the prince advanced via Saint-Jean-Pied-de-Port through Roncesvalles