 The monastery was founded by a monk named John around 450.In the seventh century, during the abbacy of Chunna ("Hunnanus"), a monk from Remiremont, the original monastic rule, which had been that of the ancient saint Macarius of Alexandria, was replaced by that of Luxeuil, founded by the Irish missionary Columbanus.When Jonas of Bobbio stayed at the monastery in 659, during Chunna's abbacy, he was compelled by the monks to write a biography of their founder.