Odilo belonged to the family of Mercoeur, one of the most illustrious of Auvergne. Jotsald says:--"In the beginning of the account of his virtues I must relate what happened to him as a boy. And lest it be thought incredible, I mention that I heard it from those to whom he was wont to narrate the circumstance. When he was quite a little boy in his father's house, before he was sent to school, he was destitute of almost all power in his limbs, so that he could not walk or move himself without help. It happened that one day his father's family were moving to another place, and a nurse was given charge of him to carry him. On her way, she put the little boy down with her bundles before the door of a church, dedicated to the Mother of God, as she and the rest were obliged to go into some adjacent houses to procure food. As they were some while absent, the boy finding himself left alone, impelled by divine inspirations, began to try to get to the door and enter the Church of the Mother of God. By some means, crawling on hands and knees, he reached it, and entered the church, and went to the altar, and caught the altar vestment with his hands; then, with all his power, stretching his hands on high, he tried to rise, but was unable to do so, his joints having been so long ill-united. Nevertheless, divine power conquered, strengthening and repairing the feeble limbs of the boy. Thus, by the intervention of the Mother of God, he rose, and stood upon his feet whole, and ran here and there about the altar. The servants returning to fetch their bundles, and not finding the child, were much surprised, and looked in all directions, and not seeing him, became greatly alarmed. However, by chance, entering the church, they saw him rambling and running about it; then they recognised the power of God, and joyously took the boy in their arms, and went to their destination, and gave him, completely whole, to his parents, with great gladness." As a child, he showed singular simplicity, modesty, and piety. "Thus passed his childish years, and as the strength of youth began to succeed to boyhood, he silently meditated how to desert the flesh-pots of Egypt, and to strive to enter the Land of Promise, through the trials of the world. O good Jesu! how sweet is Thy call! how sweet the inspiration of Thy Spirit, which as soon as Thou strikest on the heart, turns the fire of the Babylonish furnace into love of the celestial country. So! as soon as thou strikest the heart of the youth, thou changest it." Whilst he was thus meditating, S. Majolus passed through Auvergne, and Odilo came to him; then the old man, looking on the graceful form and comely face of the youth, and by the instinct of the Saints seeing into his soul, he loved him greatly; also the youthful Odilo felt a great affection for the aged monk. And when they spoke to one another, Odilo opened his heart to Majolus, and the venerable man encouraged the youth to persevere in his good intentions.