Tol Eressëa

In early versions of J. R. R. Tolkien's legendarium (see: The History of Middle-earth), Tol Eressëa was an island visited by the Anglo-Saxon traveller Ælfwine (in earlier versions, Eriol) which provided a framework for the tales that later became The Silmarillion. The name is the Elvish for "Lonely Island". In early versions, the Cottage of Lost Play is located in Kortirion, the island's main city, and it is here that Eriol the Mariner comes. There is an early poem by Tolkien, entitled "Kortirion", several versions of which can be found in The Book of Lost Tales, Volume I.

Tol Eressëa was designed as a kind of Isle of the Blessed inhabited by Elves, presenting a mythological backdrop to the Anglo-Saxon invasion of Great Britain. Tol Eressëa was conceived as a mythological equivalent of the island of Great Britain or Albion before the arrival of the Anglo-Saxons. Its main city, Kortirion, was located at the same place as Warwick, at the very centre of the island. Later, Tolkien dropped the identification of Tol Eressëa and Albion and made it an island situated far to the west, within sight of Valinor.