Edward the Black Prince as their lord, but the murder of Jacob van Artevelde put an end to this project. Both in September and in the following April the prince was called on to furnish troops from his principality and earldom for the impending campaign in France, and as he incurred heavy debts in the king's service his father authorised him to make his will, and provided that in case he fell in the war his executors should have all his revenue for a year. Edward, Prince of Wales sailed with King Edward III on 11 July 1346, and as soon as he landed
Edward the Black Prince he was taking into his pay. While his army was assembling he remained at Angoulême, and was there visited by Peter. He then stayed over Christmas at Bordeaux, for his wife, Joan, was there brought to bed of her second son Richard (the next king of England). The Black Prince left Bordeaux early in February 1367, and joined his army at Dax, where he remained three days, and received a reinforcement of four hundred men-at-arms and four hundred archers sent out by his father under his brother John, duke of Lancaster. From Dax the prince advanced via Saint-Jean-Pied-de-Port through Roncesvalles