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
British prince a title conferred on the eldest son of the sovereign since the reign of Edward I of England. In the Kingdom of Scotland, even though an honorific principality was created by James I, the heir-apparent was only referred to as Duke of Rothesay. Some others include John, brother of Richard the Lionheart and later King John, who is sometimes called Prince John. After the accession of George I (the first monarch from the House of Hanover), it became customary for the sons of the sovereign and grandsons of the sovereign in the male line to be titled 'Prince' and styled