The numbers who attended his teaching are given in another verse—
"Trium virorum millium
Sorte fit doctor humilis,
Verbi his fudit fluvium
Ut fons emanans rivulis."
Like all the other early Irish foundations which attained to wealth and dignity before the ninth century, Clonard suffered in proportion to its fame. It was after that date plundered and destroyed twelve times, and was fourteen times burnt down either wholly or in part. That being so, it is not much to be wondered at that there only remains a single surviving literary work of this school, which is the "Mystical Interpretation of the Ancestry of our Lord Jesus Christ," by St. Aileran the Wise, one of Finnian's successors, who died of the great plague in 664. This piece, like so many others, was found in the Swiss monastery of St. Gall, whither it had been brought by some monks from Ireland. The editors who printed it for the Benedictines in the seventeenth century say that, although the writer did not belong to their Order, they publish it because he "unfolded the meaning of sacred scripture with so much learning and ingenuity that every student of the sacred volume, and especially preachers of the Divine Word, will regard the publication as most acceptable." The learned editors could have hardly paid the Irish writer a higher compliment. "A Short Moral Explanation of the Sacred Names" is another still existing fragment of Aileran's, and "whether we consider the style of the latinity, the learning, or the ingenuity of the writer," says Dr. Healy, "it is equally marvellous and equally honourable to the school of Clonard." Aileran is said to have also written lives of St. Patrick, St. Brigit, and St. Fechin of Fore, and to be the original author of a litany, part Irish, part Latin, preserved in the Yellow Book of Lecan.
Another great Irish college was Clonfert on the Shannon, founded about the year 556 by Brendan the Navigator, who, like Finnian, came of the Irian race, being descended from Fergus mac Roy.[5] He was born towards the close of the fifth century, and his school, too, became very famous, having, it is said, produced as many as three thousand monks. The influence of the Navigatio Brendani, by whomsoever written, was immense, and was felt through all Europe, so that in many of the great continental libraries good MS. copies of it, sometimes very ancient, may be found.[6] But perhaps Brendan's grand-nephew and pupil may have indirectly influenced European literature in a still more important manner. This was Fursa, afterwards St. Fursa, whose visions were known all over Ireland, Great Britain, and France. There can be no doubt about the substantial accuracy of St. Fursa's life, for Bede himself, who dedicates a good deal of space to Fursa's visions,[7] refers to it. It must have been written within ten or fifteen years after his death, because it refers to the plague and the great eclipse of the sun which happened last year, that is 664. Now Dante was acquainted with Bede's writings, for he expressly mentions him, and Bede's account of Fursa and Fursa's own life may have been familiar to him, and furnished him with the groundwork of part of the Divine Comedy of which it seems a kind of prototype.[8]
Brendan's own adventures and his view of hell, which he was shown by the devil, may also have been known to Dante. Brendan prepared three vessels with thirty men in each, some clerics, some laymen, and with these, says his Irish life in the Book of Lismore, he sailed to seek the Promised Land, which, evidently influenced by the old pagan traditions of Moy Mell[9] and Hy Brassil, he expected to find as an island in the Western Sea, and so says his Irish life poetically—
"Brendan, son of Finnlug, sailed over the wave-voice of the strong-maned sea, and over the storm of the green-sided waves, and over the mouths of the marvellous awful bitter ocean, where they saw the multitude of the furious red-mouthed monsters with abundance of the great sea-whales. And they found beautiful marvellous islands, yet they tarried not therein."
Like Sindbad in the Arabian tales,[10] they land upon the back of a great whale as if it had been solid land. There they celebrated Easter. They endured much peril from the sea. "On a certain day, as they were on the marvellous ocean"—this adjective is strongly indicative of the spirit in which the Celt regards the works of nature—"they beheld the deep bitter streams and the vast black whirlpools of the strong-maned sea, and in them their vessels were being constrained to founder because of the greatness of the storm." Brendan, however, cried to the sea, "It is enough for thee, O mighty sea, to drown me alone, but let this folk escape thee," and on hearing his cry the sea grew calm. It was after this that Brendan got a view of hell.
"On a certain day," says the Irish Life, "that they were on the sea, the devil came in a form old, awful, hideous, foul, hellish, and sat on the rail of the vessel before Brendan, and none of them saw him save Brendan alone. Brendan asked him why he had come before his proper time, that is, before the time of the great resurrection. 'For this have I come,' said the devil, 'to seek my punishment in the deep closes of this black, dark sea.' Brendan inquired of him, 'What is this, where is that infernal place?' 'Sad is that,' said the devil; 'no one can see it and remain alive afterwards.' Howbeit the devil there revealed the gate of hell to Brendan, and Brendan beheld that rough, hot prison full of stench, full of flame, full of filth, full of the camps of the poisonous demons, full of wailing and screaming and hurt and sad cries and great lamentations and moaning and handsmiting of the sinful folks, and a gloomy, mournful life in hearts of pain, in igneous prisons, in streams of the rows of eternal fire, in the cup of eternal sorrow and death, without limit, without end; in black, dark swamps, in fonts of heavy flame, in abundance of woe and death and torments, and fetters, and feeble wearying combats, with the awful shouting of the poisonous demons, in a night ever-dark, ever-cold, ever-stinking, ever-foul, ever-misty, ever-harsh, ever-long, ever-stifling, deadly, destructive, gloomy, fiery-haired, of the loathsome bottom of hell. On sides of mountains of eternal fire, without rest, without stay, were hosts of demons dragging the sinners into prisons ... black demons; stinking fires; streams of poison; cats scratching; hounds rending; dogs baying; demons yelling; stinking lakes; great swamps; dark pits; deep glens; high mountains; hard crags;... winds bitter, wintry; snow frozen, ever-dropping; flakes red, fiery; faces base, darkened; demons swift, greedy; tortures vast, various."[11]