The great warriors of the Red Branch, the men of the original kingdom of Uladh [Ulla, _i.e._, Ulster], were of the third great stock, the IRIANS or race of Ir,[10] but they are perhaps better known as the Clanna Rudhraighe [Rury] or Rudricians, so named from Rudhraighe, a great monarch of Ireland who lived nearly three hundred years before Christ, or as Ulidians because they represented the ancient province of Uladh. But the Three Collas, grandsons of Cairbré of the Liffey, who was himself great-grandson of Conn of the Hundred Battles, and of course of the Eremonian stock, overthrew the Irians in the year 332, and burned their capital, Emania. The Irians were thus driven out by the Eremonians, and forced back into the present counties of Down and Antrim, where they continued to maintain their independence. So bitterly, however, did they resent the treatment they had received at the hands of the Eremonians, and so deeply did the burning of Emania continue to rankle in their hearts, that after a period of nearly 900 years they are said to have stood sullenly aloof from the other Irish, and to have refused to make common cause with them against the Normans at the battle of Downpatrick in 1260, where the prince of the O'Neills was slain.[11] So powerful, on the other hand, did the idea of race-connection remain, that we find one of the bards so late as the sixteenth century urging a political combination and alliance between the descendants of the Three Collas who had burned Emania over twelve hundred years before, and who were then represented by the Maguires of Fermanagh, the Mac Mahons of Oriel[12] and the far-off O'Kellys of Ui Máine[13] [Ee maana]. As for the fourth great stock, the ITHIANS,[14] they were gradually pushed aside by the Eberians of the south, as the Irians had been by the Eremonians of the north, and driven into the islands and coasts of West Munster. Yet curiously enough the northern Dukes of Argyle and the Campbells and MacAllans of Scotland spring from them. Their chief tribes in Ireland were known as the Corca Laidhi [Corka-lee]; these were the pirate O'Driscolls and their correlatives, but they were pushed so hard by the Mac Carthys, O'Mahonys, and other Eberians, that in the year 1615 their territory was confined to a few parishes, and twenty years later even these are found paying tribute to the Mac Carthy Reagh. There is one very remarkable peculiarity about their genealogies, which is, that, though they trace themselves with great apparent, and no doubt real, accuracy back to Mac Con, monarch of Ireland and contemporary with Oilioll Olum in the end of the second century, yet from that point back to Milesius a great number of generations (some twenty or so) are missing, and no genealogist, so far as I know, in any of the books of pedigrees which I have consulted, has attempted to supply them by filling them up with a barren list of names, as has been done in the other three stems.[15]