Edward the Black Prince compelling Peter of Castile to flee from his kingdom, and in setting up his bastard brother, Henry of Trastámara, as king in his stead. Peter, who was in alliance with Edward III, sent messengers to the Black Prince asking his help, and on receiving a gracious answer at Corunna, set out at once, and arrived at Bayonne with his son and his three daughters. The prince met him at Capbreton, and rode with him to Bordeaux. Many of the prince's lords, both English and Gascon, were unwilling that he should espouse Peter's cause, but he declared that it was not
Edward the Black Prince handed over to him. In order to get rid of his creditor Peter told him that he could not get money at Burgos, and persuaded the prince to take up his quarters at Valladolid while he went to Seville, whence he declared he would send the money he owed. The Black Prince remained at Valladolid during some very hot weather, waiting in vain for his money. His army suffered so terribly from dysentery and other diseases that it is said that scarcely one Englishman out of five ever saw England again. He was himself seized with a sickness from which