The Castle of Llyr is the third book in the Chronicles of Prydain by Lloyd Alexander.
Princess Eilonwy travels to the Isle of Mona, where she will be fostered by the kind king and queen of Mona, with Taran and Gurgi to see her off. She must learn what it means to be a lady, even though she doesn’t want to. But when they get to Mona, it is revealed to Taran that Eilonwy is in danger. For the evil enchantress Achren is after her, and her talents. Continue reading