In early versions of J. R. R. Tolkien's legenarium (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 History of Middle-Earth, Volume I.