Melaghlin, or Malachy II., fifth in direct descent from Malachy I. (the founder of the Southern Hy-Nial dynasty), was in his thirtieth year when (A.D. 980) he succeeded to the monarchy. He had just achieved the mighty victory of Tara when the death of his predecessor opened his way to the throne; and seldom did more brilliant dawn usher in a more eventful day than that which Fate held in store for this victor-king.