British Goblins: Welsh Folk-lore, Fairy Mythology, Legends and Traditions
CHAPTER II.
Classification of Welsh Fairies--General Designation--Habits of the Tylwyth Teg--Ellyllon, or Elves--Shakspeare's Use of Welsh Folk-Lore--Rowli Pugh and the Ellyll--Household Story Roots--The Ellylldan--The Pooka--Puck Valley, Breconshire--Where Shakspeare got his Puck--Pwca'r Trwyn--Usual Form of the Pooka Story--Coblynau, or Mine Fairies--The Knockers--Miners' Superstitions--Basilisks and Fire Fiends--A Fairy Coal-mine--The Dwarfs of Cae Caled--Counterparts of the Coblynau--The Bwbach, or Household Fairy--Legend of the Bwbach and the Preacher--Bogies and Hobgoblins--Carrying Mortals through the Air--Counterparts and Originals 11