The Most Ancient Lives of Saint Patrick/The Life and Acts of St. Patrick/Chapter 115
Patrick understandeth the Conscience of Saint Fiechus, and blesseth him.
There was a certain youth, named Fiechus, a scholar of Dubhtachus the bard, and he was docile of disposition, subtle of wit, florid of eloquence, and beauteous of form. And a few years before he espoused a damsel who then had lately deceased, of whom was born unto him one only son. Him walking with his aforementioned tutor did the saint meet, and, the Spirit revealing it unto him, at the moment, even with the glance of his eye, understood his conscience, and in the presence of all exclaimed: "Behold the husband of one wife, who, according to the apostle, may worthily be advanced unto the priesthood, nay, even unto the episcopate!" Then began he to expound unto Fiechus the doctrines of the faith, and advised him unto baptism. And the youth marvelled at the words of grace which proceeded from the lips of Saint Patrick; and chiefly for that so soon the saint had divined his secret and understood all the passages of his life. Therefore he believed, and took on him baptism; and after his tutor had long time withstood, but at length consented, he devoted himself unto the direction of the holy bishop. And the holy bishop blessed him, and gave unto him the alphabet written with his own hand. And being thus blessed, in one day he learned the whole Psaltery, and in a short time, the spirit of wisdom and knowledge inspiring him, he sufficiently understood the Scriptures; for no delay can there be where the Holy Spirit descends to be the teacher. And Saint Patrick advanced him unto the ecclesiastical order, and, after he had worthily ministered in each degree, consecrated him the bishop of the Church of Scleptus. And Fiechus was eminent in his life, in his learning, and in his miracles; and being directed by the angelic command, he took on him the habit of a monk, and builded in his episcopal seat a stately monastery.