Westernesse

While traveling some for work, I listened to Vance's Suldrun's Garden as an audiobook. It gave me an idea for a setting:

Westernesse (the historical place, not the one in Tolkien's legendarium) is first mentioned by that name in the 13th Century chivalric romance, King Horn, though there is little truth of the place in that work. The Greeks knew the isles by many names: the Hesperides and the Fortunate Isles chief among them. The unusual apples, tended by priestesses of such power they were believed by the Greeks to be goddesses, were known to the Celts as well. The Irish spoke of their source as Emain Ablach. Geoffrey of Monmouth would call it Insula Avallonis and noted that Arthur's half-sister Morgan was one of nine sisters who ruled there, though Geoffrey's information is a distorted echo of past political arrangements, not the status quo of the 12th Century.

Homer knew it as Scheria or Phaeacia. The Phaeacians were perhaps the isles' original inhabitants, besides the fairy, and were themselves of part fairy ancestry. They would later be called elves, and perhaps still later be mistaken for extraterrestrials, if what is said about the abilities of Phaeacian ships is to be credited.

Greek, Celtic, and Phoenician peoples and religions found the islands at some point and left their mark. Brendan of Clonfert introduced Christianity to them, though only heretical forms chased out of Europe have ever had any real purchase, and they always existed side by side with paganism in a pragmatic pluralism.

Merlin is said to be entombed there, somewhere in the ancient forest of Broceliande, home to fairy creatures and prehistoric animals long extinct elsewhere in the world--though there were persistent accounts of encounters with a living, and mad Merlin in those woods. A certain Duke of Milan was shipwrecked on a smaller island of the archipelago and managed to make of himself a great wizard with the aid of a trove of Merlin's lore.

What became of these wondrous islands in the mid-Atlantic? Certainly they appear on some old maps, though their multitude of names make their identification uncertain and their placement on these charts often fanciful. Irish legends of Hy-Brasil (yet another name for Westernesse) suggests that they are cloaked in a strange mist save for one day every seven years. Stories of the Bermuda Triangle (not the islands location most likely, but not far off either) are full of strange appearances and disappearances. Eventually, like so many other Phantom Islands, Westernesse was merely dropped from the map entirely.