Charles was now out of the way; Blanche, however, obstructed the path, and the will of her brother in her favour proved fatal to her. Juan was resolved to retain the sovereignty of Navarre during his own life, and none the less to transmit it at death to his favourite daughter Leonora, Countess of Foix, or her issue. He determined to compel Blanche to renounce her rights. To effect this she was sent across the Pyrenees, closely guarded, under the pretext that she was about to be given in marriage to the Duke of Berri, brother of the French king. But she perceived clearly enough what was her father’s purpose, and at Roncevaux, on her way, she caused a protest to be prepared in all secrecy, in which she declared that she was being carried out of Spain by violence, against her will, and that force would be used to compel her to renounce her rights over Navarre; and now she declared beforehand against the validity of such a renunciation. Upon reaching S. Jean-Pied-du-port, she was, as she had anticipated, constrained to make a formal surrender of all her rights, in favour of her sister and brother-in-law, Gaston, Count of Foix. In a letter addressed to Henry, couched in pathetic terms, she reminded him of the dawn of happiness that she had enjoyed when united to him years before, of his promises made to her, and of her subsequent sorrows. As she was well aware that her father was consigning her to imprisonment, and perhaps death at the hands of her ambitious and unscrupulous sister, she conferred on him all her rights to the crown of Navarre, to the exclusion of those who meditated her assassination, the Count and Countess of Foix. On the same day that this letter was dispatched she was handed over to an emissary of the Countess Leonora, 30 April, 1462, and was conveyed to the Castle of Orthez. The gates closed on her, and she was seen no more, but not long after they opened to allow a coffin to issue to be conveyed to Lescar, there to be interred. The secret of Blanche’s death was closely kept, till the Navarrese Cortes took the matter up, and demanded her release as their rightful queen. Then only was it announced that she was dead, but on what day and in what manner she died was never revealed.