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 imposing this tax, had retired to his Norman estate. Charles took advantage of these appeals, and on 25 January 1369 sent messengers to the Black Prince, who was then residing at Bordeaux, summoning him to appear in person before him in Paris and there receive judgment. He replied: "We will willingly attend at Paris on the day appointed since the king of France sends for us, out it shall be with our helmet on our head and sixty thousand men in our company". The Black Prince caused the messengers to be imprisoned, and in revenge for this the Counts of