Oisín is taken by the sea to the Land of Youth, Tír na nÓg, by Niamh, the daughter of the king of that country, and he returns to Ireland a few weeks later only to find that many hundreds of years have passed in his absence.
The name of the magical isle Avalon, that is ruled by Morgan and the rest of the nine sisters in Geoffrey of Monmouth's 12th-century Vita Merlini, has been derived from "island of apples".
[12][13] It makes its first known appearance in Geoffrey's The History of the Kings of Britain (c. 1136), returning in various medieval Arthuriana in the stories of Lancelot, Gawain, Percival, Tristan, Gingalain, and others.
One exception can be found in the Livre d'Artus, where Sagramore dispels the castle's evil enchantment (a cry that drives mad or kills) by the Queen of Denmark so Gawain can overthrow her son, the Red Knight.
In the 13th-century French romance Claris and Laris, Morgan lives in a palace in the enchanted forest of Brocéliande with twelve other fairy sorceresses, who lure and trap there forever various young knights for their pleasure.
[15] Welsh triad Peredur son of Efrawg features the Witches' Court at Caer Loyw (also an Otherworldly location, meaning 'Shining Fortress') or, in its English version, again at Gloucester.