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
Chevauchée of the Black Prince (1356) of about 9000 men. The French deduce that the Prince of Wales is preparing to repeat his chevauchée in the autumn of 1355. King John II of France, then at the siege of Breteuil in Normandy, sent reinforcements to reinforce the army of the Dauphin Charles, positioned at Bourges, to support the possessions and cities of Languedoc. Chevauchée of the Black Prince (1356) The Chevauchée of the Black Prince in 1356, which began on 4 August 1356 at Bordeaux and ended with the Battle of Poitiers on 19 September 1356, was a devastating raid of Edward of Woodstock, Prince of