For two years more the fighting continued with varying success, until Charles of Valois, who had been sent by Boniface to invade Sicily, was forced to sue for peace, his army being decimated by the plague, and in August 1302 the treaty of Caltabellotta was signed, by which Frederick was recognized king of Trinacria (the name Sicily was not to be used) for his lifetime, and was to marry Eleonora, the daughter of Charles II.; at his death the kingdom was to revert to the Angevins (this clause was inserted chiefly to save Charles's face), and his children would receive compensation elsewhere.
Then they passed safely through Scylla and Charybdis, past the Sirens, through the Planctae, over the island of the Sun, Trinacria and on to Corcyra again, the land of the Phaeacians, where Jason and Medea held their nuptials.
In shape it is roughly triangular,' whence the ancient poetical name of Trinacria, referring to its three promontories of Pelorum (now Faro) in the north-east, Pachynum (now Passero) in the south-east, and Lilybaeum (now Boeo) in the west.
The next year, Frederick was acknowledged as king of Trinacria for life.
The Angevins renounced Sicily in favour of Frederick, who was recognized as king of Trinacria (a name adopted so as not to mention that of Sicily), and he was to marry Leonora, daughter of Charles of Valois; at his death the island would revert to the Angevins, but his children would receive compensation elsewhere.
In 1374 Joanna made peace with Frederick of Sicily, recognizing him as king of Trinacria on condition that he paid her tribute and recognized the pope's suzerainty.