St. Patrick was essentially a man of work and not of letters, and yet it so happens that he is the earliest Irish writer of whom we can say with confidence that what is ascribed to him is really his. And here it is as well to say something about the genuineness of St. Patrick's personality and the authenticity of his writings, for the opinion started by Ledwich has gone abroad, and has somehow become prevalent, that St. Patrick's personality is nearly as nebulous as that of King Arthur or of Finn mac Cúmhail, and at the best is made up of a number of little Patricks lumped into one great one. That there was more than one Patrick[6] is certain,[7] and that the great Saint Patrick who wrote the "Confession" may have got credit in the early Latin and later Irish lives for the acts of others, is perfectly possible, but that most of the essential features of his life are true, is beyond all doubt, and we have a manuscript 1091 years old, apparently copied from his own handwriting, and containing his own confession and apologia. How this exquisite manuscript, consisting of 216 vellum leaves, written in double columns, has happily been preserved to us, we shall not lose time in inquiring; but how its exact date has been ascertained through what Dr. Reeves has characterised as "one of the most elegant and recondite demonstrations which any learned society has on record, is worth mentioning." The Rev. Charles Graves, the present Bishop of Limerick, made a thorough examination of the whole codex when, after many vicissitudes and hair-breadth escapes from destruction, it had been temporarily deposited in the Royal Irish Academy. Knowing, as O'Curry pointed out, that it was the custom for Irish scribes to sign their own names, with usually some particulars about their writing, at the end of each piece they copied, he made a careful search and discovered that this had actually been done in the Book of Armagh, and in no less than eight places, but that on every spot where it occurred it had been erased for some apparently inscrutable reason, with the greatest pains. In the last place but one, however, where the colophon occurred, the process of erasure had been less thorough than in the others, and after long consideration, and treatment of the erasure with gallic acid and spirits of wine, Dr. Graves discovered that the words so carefully rubbed out were _Pro Ferdomnacho ores_, "Pray for Ferdomnach." Turning to the other places, he found that the erased words in at least one other place were evidently the same. This settled the name of the scribe; he was Ferdomnach. The next step was to search the "Four Masters," who record the existence of two scribes of that name who died at Armagh, one in 726 and the other in 844. One of these it must have been who wrote the Book of Armagh,--but which? This also Dr. Graves discovered, with the greatest ingenuity. At the foot of Fols. 52-6 he was, with extreme difficulty, able to decipher the words _ ... ach hunc ...