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
Royal coat of arms of the United Kingdom William I, King of Scots. Members of the British royal family are granted their own personal arms which are based on the Royal Arms. Only children and grandchildren in the male line of the monarch are entitled to arms in this fashion: the arms of children of the monarch are differenced with a three-point label; grandchildren of the monarch are differenced with a five-point label. An exception is made for the eldest son of the Prince of Wales, who bears a three-point label. Since 1911, the arms of the Prince of Wales also displays an inescutcheon of the ancient arms