According to Sir Thomas Malory, one of the four enchantresses, associates of Morgan Le Fay, who captured Lancelot and held him prisoner in Castle Chariot. Her accomplices where the Queen of Eastland, the Queen of Northgalis and the Queen of Sorestan.
The Out Isles are thought to be identifiable as the Hebrides.
Source
Le Morte Darthur | Sir Thomas Malory, 1469-1470
