On his arrival in Béarn he could scarcely refrain, in spite of his uncle's injunctions to the contrary, from communicating his secret to his favourite brother, Jobain (Yvain), his father's natural son, who shared his confidence as well as his couch. Jobain, however, was not long before he observed the ribbon round his brother's neck, and pressed him to explain the meaning of the little bag which he saw suspended there. Young Gaston, confused at finding his secret so nearly discovered, bade him inquire no further,—that there was a mystery attached to it which he dared not tell; "but you will soon see," he added, cheerfully, "a great change in my father: and he and my dear mother will be well together."
A few days after this, the brothers were playing at the jeu de paume, and a dispute arose between them which grow more and more violent, till Gaston forgot himself so far as to strike Jobain on the face: it was but a childish quarrel, which the next moment might have healed, but Jobain's passion was so excited, that in his first fury he rushed to his father, and accused Gaston of concealing in his bosom a bag of poison, intended to be administered to the count, in order to cause his death.
Count Gaston, on hearing this accusation, without giving himself time for a moment's reflection, which would have shown him the improbability of the story, burst into so ungovernable a fury that he became almost frantic, and it was with the utmost difficulty his knights prevented his instantly putting his son to death. The states of Foix and Béarn, to whose judgment he was at length induced to refer the sentence of this involuntary parricide, were more moderate. "My lord," said they, "saving your grace, we will not that Gaston should die: he is your heir, and you have no other."
It is even asserted, that those of Foix in particular would not consent to retire until they had received a promise from the count that he would not attempt his son's life. It was, therefore, on the servants of young Gaston that the weight of his fury fell; and he caused no less than fifteen to suffer the utmost extremity of torture, under which they died. As for the unhappy prince, he had already condemned himself. Confined in his tower of Orthez, he had taken to his bed, and there lay, concealing himself in the clothes; and for several days refused all nourishment, giving himself up altogether to despair. Those whose business it was to serve him, finding this, became alarmed, and, hastening to his father, related the fact:
"My Lord," said they, "for the love of God, take heed to your son; for he is starving in the prison, where he lies, and has not eaten since he entered there, for his meat remains untouched as when we first took it into the tower."
Thereupon the count started up, without uttering a word, and, quitting his chamber, hurried to the prison where his son was, says Froissart, and, "by ill fortune, he held in his hand a small, long knife, with which he was cleaning and arranging his nails. He commanded the door of the dungeon to be opened, when he went straight to his son, and, still holding the knife in his hand by the blade, which did not project from it more than half an inch, he caught him by the throat, calling out, 'Ha! traitor!—why will you not eat?' and by some means the steel entered into a vein. The count, on this, instantly departed, neither saying or doing more, and returned to his chamber. His poor child, terrified at the sight of his father, felt all his blood turn, weak as he was with fasting, and the point of the knife having opened a vein in his throat, however small it might have been,—turned him round—and died!
"Thus," continues the chronicler, "it was as I tell you: this was the death of young Gaston de Foix. His father, in truth, killed him; but it was the King of Navarre who directed the blow."
The agony of remorse or affection of the inhuman count, it is but just to say, was extreme, on finding how all had ended; "and the body of the child was taken away with cries and tears to the Frères Mineurs, at Orthez, and there buried."
What now remained to the brilliant Gaston Phoebus? He had no legitimate child, and he hated the next heir, Mathieu de Castelbon, "because he was not a valiant knight at arms." His intention was to leave his large possessions to his two natural sons; but, before he had made the proper dispositions to secure it to them, he was surprised by death in the hospital of Orion, two leagues from Orthez, as he was washing his hands on his return from his favourite pursuit of hunting the bear, about which he is eloquent in his work on the Chase; and all that Yvain, the betrayer of young Gaston, could do, was to take possession of his father's ring, and his little long knife—that fatal instrument!—and by those tokens procured that the gates of the castle of Orthez should be opened to him; hoping to obtain a part of the treasures of the count, who had not less than a million of crowns of gold in his coffers.
It was in the month of August, under a hot sun, that Gaston Phoebus had hunted the bear half the day; and on arriving at Orion, about two leagues from Orthez, he appeared delighted at the coolness of the fresh strewn room, where the dinner was prepared: "This verdure," said he, "does me good, for the day has been fearfully hot!" They brought him water to wash, but no sooner did he feel its coldness on his fingers—which were "fine, long and straight"—than he was seized with a fit, probably of apoplexy, and was dead almost immediately, to the extreme terror of all with him. Yvain, it seems, was at first full of grief, but listened to the advice of those who recommended him instantly to repair to the castle of Orthez, and secure what treasure he could. Accordingly he rode off, and by showing the count's ring and knife, was admitted; but the coffer, bound with iron and closed with many locks, was opened by a key, which the count always wore round his neck, in a little bag, and that key was found by the chaplain on his master, after Yvain's departure, who was vainly striving to force open the strong chest. The news, in spite of precaution, soon spread in Orthez; and the citizens, who were all greatly attached to their lord, came in crowds to the court of the castle, demanding news of him. Yvain was obliged to speak to them from a window, and declare the truth; appealing to them to protect his right, and not suffer the castle or its contents to be injured. To this they all agreed, as they deplored his being illegitimate, and consequently incapable of succeeding his father.