Phyllis Ann Karr, modern Arthurian author. These dictionaries originally came from Karr’s notes for the game Pendragon she and her publisher were working on, hence the admittedly rather arbitrary geographical identifications and that the book tends not to notice contradictions in its sources, for example that Gareth/Gaheriet has an entirely different origin in Malory and in the Vulgate Merlin. Karr’s original purpose was to create a coherent game world without discrepancies. See Arthurian dictionaries