At Clermont he is said to have converted the senator St. Cassius and the pagan priest St. Victorinus, to have sent St. Sirenatus (Cerneuf) to Thiers, St. Marius to Salers, Sts.
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The Vita was rewritten and amplified by the monks of Issoire, who retained as a relic the saint's head.
All that is known about him may be summed up thus: Under the Emperors Decius and Gratius (AD 250-251), Pope Fabian sent out seven bishops from Rome to Gaul to preach the Gospel: Gatien to Tours, Trophimus to Arles, Paul to Narbonne, Saturnin to Toulouse, Denis to Paris, Austromoine to Clermont, and Martial to Limoges.