It is agreed upon all hands that the Saint derived his literary aquirements, such as they were, from Gaul.[61] Reference is made to three distinct sources whence he derived his education--to St. Martin, to St. Germanus, and to Saints of some islands in the Mediterranean. His biographers are not agreed either as to the order in which our Saint visited those masters of a spiritual life, or the number of years he spent under each, but all unite in pointing to these three sources whence St. Patrick derived his learning and his holiness. It must be borne in mind that Patrick was made a captive at the age of sixteen, and that he spent six years in captivity on the slopes of Slieve Mish, in the county Antrim. His education in his youth seems to have been much neglected, for he tells us himself that although born of noble parents according to the flesh--his father, Calphurnius, was a decurio, that is the head of a local municipium, most probably on the banks of the Clyde, in North Britain--still he had little or no knowledge of God, and could scarcely discern between good and evil. The years of his captivity served to open his mind to a higher spiritual life, but could afford him no opportunity of adding to his purely literary knowledge.[62] So when he succeeded under divine guidance in making his escape at the age of twenty-two, he was indeed a holy but certainly not a learned young man. Escaping to France according to the generally received opinion, he first seems to have made his way to Tours, towards the closing years of the fourth century, for the date cannot be accurately fixed. At that time St. Martin, the soldier Saint, was Bishop of Tours, and led a life of extraordinary holiness and mortification at the monastery of Marmoutier, on the banks of the Loire, in the neighbourhood of that city. Many writers say that Patrick's mother, Conchessa, was a niece of St. Martin, and this fact would easily explain why St. Patrick fled for refuge and guidance to his venerable relative, whose fame at that time was spread over all France. The story of the relationship is strange enough, seeing that St. Martin was a native of Sabaria, in Pannonia, where he was born about A.D. 316. But though strange, it is not incredible, and goes far to explain the great veneration in which St. Martin of Tours has always been held in Ireland. The authors of the _Third_ and _Fifth Lives of St. Patrick_, as printed by Colgan, tells us that the young Patrick spent four years under the guidance of St. Martin, who gave him, according to Probus, the tonsure and religious habit in his monastery of Marmoutier. It is not easy to fix the exact period. According to the common opinion, Martin died in A.D. 397, so that Patrick must have made his escape to Gaul in A.D. 393. Others, however, fix the date of St. Martin's death in A.D. 400 or 402, so that we shall not be far wrong if we suppose these years which Patrick spent under the guidance of St.