Baring-Gould’s sources: Roman, Belgian, and Gallican Martyrologies. Authority *An ancient life of uncertain date; also the life of S. Authbert, written by S. Fulbert.] Landelin was born of noble Frank parents, in the reign of Dagobert, between Bapaume and Cambrai, in a village called Vaux. His education was confided to S. Autbert, who endeavoured to instil the maxims of religion into the heart of the youth. But carried away by his youthful passions, and the example of his family, he left the bishop, and lived a wild and dissolute life. The sudden death of a comrade startled him, and he went to S. Autbert, and begged to be admitted as his disciple in the monastic life. S. Autbert sent him into the solitude of Lambach, there to bewail his past sins, and learn to discipline his body. He was afterwards much sought as a guide to souls, and he founded the monastery of Lobes, then those of Aune and of Waster. He judged himself unworthy to rule these monasteries, and gave them over to the guidance of his disciples, Ursmar and Odo; then, accompanied by S. Adeline and S. Domitian, he penetrated into the vast forest which stretched between Mons and Valenciennes, and choosing a spot, where afterwards rose the abbey of Crespin, built cabins of boughs. Gradually his retreat became known, and disciples assembled around him. He issued from his solitude at intervals to preach to the villagers around, and to instruct them in the truths of the Christian faith.