The various forms of the visit to the Grail Castle in the
romances--Conte du Graal: Chrestien; Gautier-Manessier;
Gautier-Gerbert--Didot-Perceval--Mabinogi--Conte du Graal;
Gawain's visit to the Grail Castle--Heinrich von dem
Türlin--Conte du Graal: Perceval's visit to the Castle of
Maidens--Inconsistency of these varying accounts; their
testimony to stories of different nature and origin being
embodied in the romances--Two main types: feud quest and
unspelling quest--Reasons for the confusion of the two
types--Evidence of the confusion in older Celtic literature--
The Grail in Celtic literature: the gear of the Tuatha de
Danann; the cauldron in the Ultonian cycle; the Mabinogi of
Branwen; vessel of balsam and glaive of light in the
contemporary folk-tale--The sword in Celtic literature:
Tethra; Fionn; Manus--Parallels to the Bespelled Castle; the
Brug of Oengus, the Brug of Lug, the Brug of Manannan Mac
Lir, Bran's visit to the Island of Women, Cormac Mac Art, and
the Fairy Branch; Diarmaid and the Daughter of King Under the
Waves--Unspelling stories: The Three Soldiers; the waiting of
Arthur; Arthur in Etna; the Kyffhäuser Legend, objections to
Martin's views concerning it--Gawain's visit to the Magic
Castle and Celtic parallels; The Son of Bad Counsel; Fionn in
Giant Land; Fionn in the House of Cuana; Fionn and the Yellow
Face--The Vanishing of the Bespelled Castle--Comparison with
the Sleeping Beauty cycle--The "Haunted Castle" form and its
influence on Heinrich's version--The Loathly Grail Messenger page 170