This Don Pedro was cruel and wicked, and by his tyranny had gained the hatred of his subjects. He had caused many of the proudest Spanish nobles to be secretly assassinated or executed for some pretended crime, and had even caused the death of his own wife, who was a French Princess. Moreover, he was regarded with abhorrence by the Pope, because he oppressed the Church, and lived on friendly terms with the Moorish King of Grenada. The Pope therefore legitimatised his bastard brother, Henry of Trastamare, a bold and valiant knight, and encouraged him to wrest the kingdom from Don Pedro. Henry had special reasons to hate Don Pedro; for one of the tyrant's first victims had been Henry's mother, Leonora de Guzman; and it was only with difficulty that Henry himself, and his brother Don Tello, had escaped from Pedro's hands, when he seized and executed the other members of their family. Neither was it difficult for Henry of Trastamare to find friends and supporters. Within his own dominions Pedro had no friends; and in Charles V., who had been King of France since the death of his father King John, Henry found a ready ally. Charles had various reasons for animosity to Pedro. He resented bitterly the murder of his kinswoman, Pedro's queen, and saw in Pedro an ally of England. Charles V. was a wise and cautious man. Though he writhed under the burdensome obligations of the peace of Bretigny, he felt that he was not yet strong enough to reopen the war with England. Now he hoped that, by aiding Henry of Trastamare, he might strike a blow at the English power through their ally. Another important reason influenced him in this direction. France, as we have seen, was devastated by the Free Companies, who were daily growing more powerful. The Pope at Avignon trembled before them, and it was equally important to both Charles V. and the Pope to get rid of them. The two therefore joined together in hiring these companies to aid Henry. A treaty was concluded with the leaders of the companies, who were only too glad to engage on a military expedition in which they might hope for plenteous spoils. The French general, Bertrand Du Guesclin, whose fame had grown in the Breton war, was ransomed from captivity in Britany, that he might lead the Free Companies into Spain. Amongst the chiefs of the companies were many English and Gascons, who went in spite of Edward III.'s commands to the contrary. They marched over the Pyrenees into Spain, and were met at Barcelona by Henry of Trastamare. There was no one found to take up the cause of the hated Pedro, who lost his throne without a battle, and was obliged to fly, with his two daughters, to the fortress of Corunna, and then to Bayonne. Thence he sent letters to the Black Prince, asking for his protection and aid.