Baring-Gould’s sources: Gallican Martyrologies. Authority: the life of S. Leobard, written by his friend, S. Gregory of Tours.

Leobard was the son of noble parents in Auvergne. The youth loved study and prayer. On reaching his majority, his father urged him to marry, but the young man, having no wish to take to himself a wife, refused. The father, however, pressed him so strongly, that at last he consented to be betrothed. "Then," says S. Gregory, "the ring, the kiss, and the shoe were given, and the betrothal feast was kept." But Leobard lost his father shortly after, and taking the betrothal gifts, he rode to his brother's house, to make them over to him. He found his brother so drunk that he did not even invite him to stay the night with him, so Leobard tied up his horse, and crept into a hay loft and slept there. But in the middle of the night he woke, and his mind turned to the importance of saving his soul, and of striving to be like Christ. Then he resolved to renounce the world wholly; but first to seek counsel at the tomb of S. Martin [St. Martin of Tours (d. 397), soldier turned bishop] at Tours. From Tours he went to Marmoutier, and joined himself to a hermit named Alaric, who spent his time in making parchment and writing out Holy Scripture. Leobard lived in a cave, which he dug out of the rock, enlarging it and improving it as he saw fitting; and here he spent twenty-two years in prayer and study and writing, and in labour with his hands. He was frequently visited by S. Gregory of Tours [bishop and historian of the Franks (d. 594)], who was his personal friend. On a Sunday, being very ill, he said to him who ministered to him in his sickness, "Prepare me some food." "It is ready, sir," answered the servant shortly after. "Go forth," said the hermit, "and see if the people are returning from mass." And this he said because he knew that his hour was come, and he desired to be alone with God when he migrated. So the servant went out and looked towards the church, and waited, and presently he returned to say that he saw the congregation drifting homewards, then he saw his master lying dead upon the ground, and he, too, was going home.