 He founded the Abbey of Saint Peter (now the Abbey of Saint Bertin) in Sithiu, soon to rival the old monastery of Luxeuil for the number of learned and zealous men educated there.In 649 he erected the Church of Our Lady of Sithiu, with a small monastery adjoining, which he turned over to the monks of Saint Bertin, on condition that he would be buried at the site and that the church would serve as a burial place for the monks.The exact date of his death is unknown, but he is believed to have died about the year 670.