| date = | year =r | url =http://www.museudiocesaurgell.org/laseu/uk/sorigenv.htm | accessdate = 2007-08-22 | postscript = <!--None-->}}</ref> It is now certain that Claudius was not a disciple of Felix.<ref name="Gorman279"/> If he was from Spain, it is uncertain whether or not he received his education there or in [[Lyon]] under the archbishop [[Archdiocese of Lyon#Carolingian Period|Leidrad]].<ref name="Gorman280">M. Gorman 1997, p. 280.</ref> It was probably Leidrad and, as Claudius himself tells it, his schoolmates and the future [[Holy Roman Emperor|emperor]] [[Louis the Pious]] who convinced Claudius to study exegesis and concentrate on certain portions of [[Scripture]].<ref name="Gorman280"/> Claudius also studied the [[Church Fathers]].
When Louis the Pious was still [[King of Aquitaine]], he called Claudius to his court at [[Chasseneuil]] sometime before 811. In 813, Emperor [[Charlemagne]] called Louis, his only surviving legitimate son, to his court. There he crowned him as his heir. The following year, Charlemagne died and Louis was made ruler of the [[Holy Roman Empire]]. He brought Claudius to [[Aachen]], the empire's capital city.<ref name="Gorman280"/> There Claudius gave exegetical lectures to the emperor and the court and was even urged to put his lectures in writing by the emperor himself.<ref name="Gorman281">M. Gorman 1997, p. 281.</ref> Claudius was a member of a veryan elite circle of secular and ecclesiastic politicians and authorities and a ''creatura della corte di Aquisgrana'' ("creature of the court of Aachen").<ref name="Gorman279"/><ref name="Gorman281"/> In 817, he was sent by Louis to Turin to act as bishop.<ref name="ODCC" /> It has been suggested that the appointment of a theologian and scholar to a post such as [[Turin]], which had attendant military duties due to the threat of [[Saracen]] raids, was largely based on the need for an imperial supporter in Italy in light of the rebellion of [[Bernard of Italy|Bernard]].<ref name="Gorman281"/> Bernard was the illegitimate son of King [[Pippin of Italy|Pepin]], the third son of [[Charlemagne]]. Louis gave Italy to his eldest son [[Lothair I|Lothair]] when the empire was partitioned among his three sons in 817.<ref name="ODCC">{{cite book | last = | first = | authorlink = | coauthors = Altmann and Bernheim | title =Ausgewahlte Urkunden | publisher = | year =1891 | location =Berlin | pages = 12 | url = | doi = | id = | isbn = }}</ref> Bernard rebelled against his uncle with the support of [[Bishop]] [[Theodulf]] of [[Orléans]]. The rebellion was put down, but the event reduced the emperor's prestige amongst the [[Franks|Frankish]] nobility and it became important that the [[Roman Catholic Archdiocese of Turin|bishop of Turin]] be a man who was loyal to the emperor.<ref name="OME">{{cite book | last =Holmes | first =George | authorlink = | coauthors = | title =The Oxford History of the Medieval Europe | publisher =Oxford University Press | year =1992 | location = | pages =98 | url = | doi = | id = | isbn = 0-19-285272-8}}</ref><ref name="HME">{{cite book | last =Deanesly | first =Margaret | authorlink = | coauthors = | title =History of Early Medieval Europe 476–911 | publisher= Methuen & Co Ltd | year =1969 | location =London | pages =434–435 | url = | doi = | id = | isbn = 0-416-29970-9}}</ref>
