The thirty-seventh, Fiachaidh, was well known in Irish romance; the thirty-eighth was Eoghan, or Owen Mór, from whom all the septs of the Eoghanachts, or Eugenians of Munster come, who embrace every family and sept hitherto mentioned, and many more. They are carefully to be distinguished from the Dalcassians, who are descended from Owen's second son Cas. It was the Dalcassians who, with Brian Boru at their head, preserved Ireland from the Danes and won Clontarf. For many centuries the history of Munster is largely composed of the struggles between these two septs for the kingship. The thirty-ninth is the celebrated Oilioll [Ulyul] Olum, king of Munster, whose wail of grief over his son Owen is a stock piece in Irish MSS. He is a son of the great Owen, better known as Mogh Nuadhat, or Owen the Splendid, who wrested half the kingdom from Conn of the Hundred Battles, so that to this very day Connacht and Ulster together are called in Irish Conn's Half, and Munster and Leinster Owen's Half. The forty-third ancestor is Dergthini, who is known in Irish history as one of the three heirs of the royal houses in Ireland, whom I have mentioned before as having been saved from massacre when the Free Clans or Nobility were cut to pieces by the Unfree or Rent-paying tribes at Moy Cro--an event which is nearly contemporaneous with the birth of Christ. Hitherto there have been nine kings of Munster in this line, but not a single king of Ireland, but the forty-ninth ancestor, Duach Dalta Degadh, also called Duach Donn, attains this high honour, and takes his place among the Reges Hiberniæ about 172 years before Christ, according to the "Four Masters." After this a rather bald catalogue of thirty-six more ancestors are reckoned, no fewer than twenty-four being counted among the kings of Ireland, and at last, at the eighty-sixth ancestor from the Earl of Clancarthy, the genealogy finds its long-delayed goal in Eber, son of Milesius.