His two Vitae are hagiographical compositions, both written in the 13th c. and accepting a tradition which makes Claudius the first archbishop of the city of Besan§on from 626 633, and then abbot of the monastery of Condat = Saint-Oyend, which he directed for 55 years. It is probable that while the hagiographical texts attributed to Claudius of Saint-Oyend the dignity of bishop of Besan§on, the bishop was actually another Claudius who, during the 6th c., took part in the Councils of Epaone and Cione. The modern city of Saint-Claude, which arose near the abbey, is named for him; his feast is 6 June. The hypothesis advanced by Perrat that Claudius is the author of the sermon for the feast of All Saints preserved in a papyrus envelope at Basel 1 B seems unsustainable. It was opposed, in particular, by Tj¤der, who asserts that the fragment in question contains, rather, a list of objects and fabrics of various kinds, donated to or extant in some church or monastery 32, perhaps compiled at Ravenna in the 1st half of the 8th c. From this point of view, the papyrus fragment of Basel would seem to have no relation with the monastery of the Jura or with its abbot. If the papyrus comes from Ravenna there is also no reason for it to be associated with Claudius, abbot of Saint-Oyend, of the Tractatoria Cameracensis inc.: Istae sunt pigmentae quas ad Cameracum debemus comparare, on which see CPL 1312b. It is actually a diploma, written in the Merovingian period and handed down in an appendix to the Statutes of Adalard of Corbie in the MS Paris, BN, 13908,ff. 26- 27, which attests to a flourishing commerce in Eastern products in France, in particular papyrus and spices, with which the city of Cambrai was regularly provisioned.