Clas Myrddin, or Merlin's Enclosure, is an early name for Great Britain given in the Third Series of Welsh Triads.[1] It is implied that it is the oldest name, as opposed to "Albion", but the implication is not wholly credible.[2]
Notes and References
Rhys: Hibbert Lectures, p. 168.
Stephen Thomas Knight, Merlin: Knowledge and Power Through the Ages, p. 6
