[15] From Mac Con, son of Maicniad, king of Ireland, to the end of the second century, Mac Firbis's great book of genealogies only reckons twelve generations of Breogan, but in the smaller handwriting at the foot of the page twenty-two generations are counted up. See under the heading, "Do genealach Dairfhine agus shíl Luighdheach mic Iotha Mac Breoghain," at p. 670 of O'Curry's MS. transcript. Michael O'Clery's great book of genealogies counts twenty-three generations from Maic Niad to Ith, both included, see p. 223 of O'Clery's MS. Keating's pedigree, as given in the body of his history, gives twenty-three generations also, but only seventeen in the special genealogy attached to it. There are no such curious discrepancies in the other three stems. I can only account for it by the impoverished and oppressed condition of the Ithians, which in later times may have made them lose their records. [16] The chief exceptions being, as we have seen, the Scottish Dál Riada and the Leinster O'Cavanaghs, who do not join the Eremonian line, one till the fourth and the other till the seventh century before Christ. [17] Conall Cearnach, from whom, along with his friend Fergus mac Roigh or Roy, the Irians claim descent, was first cousin of Cuchulain, and Tighearnach records Cuchulain's death as occurring in the second year after the birth of Christ, the "Chronicon Scotorum" having this curious entry at the year 432, "a morte Concculaind herois usque ad hunc annum 431, a morte Concupair [Conor] mic Nessa 412 anni sunt." It is worth noting that none of the Gaelic families trace their pedigree, so far as I know, to either Cuchulain himself, or to his over-lord, King Conor mac Nessa. Cuchulain was himself not of Ithian but of Eremonian blood, although so closely connected with Emania, the Red Branch, and the Clanna Rury. If Irish pedigrees had been like modern ones for sale, or could in any way have been tampered with, every one would have preferred Cuchulain for an ancestor. That no one has got him is a strong presumption in favour of the genuineness of Irish genealogies. CHAPTER VII DOCUMENTARY EVIDENCE We must now consider whether Irish genealogies were really traced or not to those points which I have mentioned. Is there any documentary evidence in support of such an assertion? There is certainly some such evidence, and we shall proceed to examine it.