 To him we owe a valuable addition (455-581) to the Chronicle of St. Prosper of Aquitaine.The episcopal see of Avenches may have been transferred to Lausanne by Marius, or possibly not before 610.Lausanne was originally a suffragan of the archbishopric of Lyon (certainly about the seventh century), later of Besançon, from which it was detached by the French Napoleonic Concordat of 1801.