Acknowledgements:
Thanks go out to tmResearch, Rocky C. Karlage, David Yale, Brad Gilbert, and Bret Hammond (www.bretnet.com), all of whom pointed me to John Carey's translation of William of Newburgh's account in Eyewitness to History.
Thanks also go to Melissa Leggett for sending me her observations about the folkloric nature of the story.
Sources:
Encyclopedia Britannica, 1982 E.B. Inc.
Micropedia IX, entry on the Norman king, Stephen.
Micropedia X, entry on the William of Newburgh.
Eyewitness to History, John Carey, 1987 Faber and Faber Limited, pg. 28-30.
Fairy Mythology, The, Thomas Keightley, 1850 London, pg. 281-283.
Fairies, The, in English Tradition and Literature, K.M. Briggs, pg. 7-8.
House of Evil, Margaret Rowan, 1977 Scholastic Magazines, pg. 22-28.
Rerum Britannicarum Medii Aevi Scriptores, or Chronicles and Memorials of Great Britain and Ireland During the Middle Ages, 1857 London, no. 66 - 'Radulphi de Coggeshall Chronicon Anglicanum', pg. x-xxv, pg. 118-120.
The Green Children of Woolpit, Paul Harris, Fortean Times #57, Spring 1991, pg. 39,41.