When his mother was pregnant with Quinidius, she made a pilgrimage to the tomb of Trophimus of Arles, where an angel reportedly appeared to her and prophesied that her son would lead many people to beatitude.

As such, he signed the resolutions of the 5th Synod of Arles on behalf of his bishop in 552; shortly afterwards, with the approval of King Childebert I, he became coadjutor to the aged Theodosius with the right of succession.

He resisted the claims of the patrician Mummolus, conqueror of the Lombards, who felt that the bishop had not shown him sufficient respect.

[1] When the Saracens invaded, the monks took the head to the monastery in Mauriac in the Auvergne, the rest of the relics were hidden and thus saved.

[5] He was officially registered in the catalogue of saints in 1205 during the papacy of Innocent III at the request of Rambaud Flotte, bishop of the city.