In his De Viris Illustribus Casinensibus , Peter the Deacon ascribes to him the composition of a Cantus ad B. Maurum and letters to King Philip I of France and to Hugh of Cluny, which no longer exist.

And since he confirmed the strict rule of Cluny, they extol him further as one of the reformers of monasticism. References Further reading Norwich, John Julius, The Popes A History (2011) Levillain, Philippe, The Papacy Gaius Proxies , Routledge (2002) Mann, Horace K., The Lives of the Popes in the Early Middle Ages, Vol.