De Bourgos or Burkes, [606]
Deaf Valley, [345]
Deibhidh metre, [414], [446], [469]; meaning of the word, [483]; found in the oldest poems, [484]; the official metre of the bards, [530]; in Colloquy of the Ancients, [507]; in the "Contention of the Bards," [530]; used in Scotland, [547]
Déirdre, [26]; saga of, [302] ff.; various versions of, [304]
Delbaeth, son of Ogma, [52]
Denmark, history of, [78]
Dergthini, [63]
Design, Irish, not all Celtic, [454]