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.