British Goblins: Welsh Folk-lore, Fairy Mythology, Legends and Traditions
CHAPTER IV.
Grotesque Ghosts--The Phantom Horseman--Gigantic Spirits--The Black Ghost of Ffynon yr Yspryd--Black Men in the Mabinogion--Whirling Ghosts--Antic Spirits--The Tridoll Valley Ghost--Resemblance to Modern Spiritualistic Performances--Household Fairies 174