Gaston Phœbus succeeded his father in 1343, and in 1348 married Agnes, daughter of Philip III of Navarre. By her he had one son, Gaston, as beautiful as Phœbus himself, and an amiable youth. Before long the Count and his wife fell out. The quarrel was sordid--it concerned money. Phœbus had imprisoned the Sieur d’Albret. The King of Navarre, Charles the Bad, brother of the Countess, interceded for his liberation, and undertook to guarantee payment of fifty thousand francs for his ransom. Accordingly Gaston released him, and d’Albret paid the money into the hands of the King of Navarre, who pocketed it, and declined to send it to the Count of Foix, under the plea that he was trustee for his sister and reserved it as her dower. The Count resented this upon his wife, whom he called by all the bad names in his copious vocabulary. He had taken a mistress, and he openly favoured her in the face of his wife for her humiliation. By this woman he had three sons. Then he ordered Agnes to visit the Court of Navarre and use her personal influence to obtain the money due. The Countess went, but failed to induce her brother to disburse; and knowing how ungovernable was the temper of her husband, how little he loved her, she shrank from returning to Orthez. The boy Gaston at the age of fifteen entreated leave to visit his mother at Pampeluna. The lad was distressed at the estrangement, and pined for his mother. Accordingly his father gave him a splendid retinue of gallant youths, and the Bishop of Lescar as his chaplain. Charles the Bad resolved on a diabolical act of treachery. When the boy was leaving he drew him aside, assured him of his distress at seeing the lad’s father alienated in heart from his mother, and gave him a bag of arsenic, which he informed him was a love powder. This he was to strew on his father’s meat, or drop into his cup, when Phœbus’s love for his wife would infallibly revive. But on no account, said Charles, was Gaston to breathe a word of this to any one, and he must be cautious to seize the right moment for the administration of the dose, when unobserved. Gaston, fully believing what his uncle said, hung the bag round his neck under his dress, and returned to Orthez. Now it happened that Gaston and his half-brother, the bastard Evan, slept in the same room. They were nearly of the same age and size, and dressed alike. Evan did not fail to notice the silk bag and questioned Gaston about it, but was put off with evasive answers. Three days after Evan and Gaston quarrelled over a game of tennis, and Gaston boxed his half-brother’s ears. Evan ran to his father and told him that Gaston carried in his bosom a mysterious pouch of which he would give no account.