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 "Edward the Prince, cognomen: The Black"); in the other, in English to "the Blake Prince". In both instances, Leland is summarising earlier works – respectively, the 14th-century "Eulogium Historiarum" and the late 15th-century chronicle attributed to John Warkworth – but in neither case does the name appear in his source texts. In print, Roger Ascham in his "Toxophilus" (1545) refers to "ye noble black prince Edward beside Poeters"; while Richard Grafton, in his "Chronicle at Large" (1569), uses the name on three occasions, saying that "some writers name him the black prince", and elsewhere that he was "commonly called the