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 Périgord and Comminges and other lords set on Sir Thomas Wake the high-steward of Rouergue, slew many of his men, and put him to flight. The prince sent for Chandos, who came to his help, and some fighting took place, though war was not yet declared. His health was now so feeble that he could not take part in active operations, for he was swollen with dropsy and could not ride. By 18 March 1367 more than nine hundred towns, castles, and other places signified in one way or another their adherence to the French cause. The Black Prince had