 To avoid the persecutions of the Arian Visigoths, he fled Rodez and proceeded to Auvergne, where he was hospitably received by Bishop Euphrasius ("Eufrèse").King Theodoric I appointed Quinctianus successor to Sidonius Apollinaris (grandson of the famous Sidonius Apollinaris), Bishop of Clermont.On the death of the latter, Quinctianus succeeded to the See of Clermont, which he occupied until his death on November 13, 525 or 526

His feast is celebrated on November 13, except at Rodez, where it is kept on June 14.