[Ir., Red Dáire].
Shadowy figure in the Fenian Cycle. Usually he is the son of Gnáthaltach and the father of the three destructive Fothads, whom Fionn mac Cumhaill battles. Some commentators have asserted that Dáire Derg is identical with Morna, founder of the Clann Morna, adversaries of Fionn in the Fenian Cycle. As Dáire Derg lost one eye, he is also identified with Goll mac Morna. In some narratives he is described as one of Fionn's ancestors. See also DÁIRE (3).