After being subjected to a thorough investigation, the record No. 19 of the Registrum by Petrus Diaconus (JL †4040), which was considered to be a complete forgery by editions and catalogues, reveals its partial authenticity. It fits into the context of a decisive change for the history of the abbey of Montecassino: the transition from the Byzantine to the Western influence following Henry II’s military intervention. The emperor, pope Benedict VIII and the abbott Theobaldus cooperate to consolidate the abbey in the new political framework: a strengthening that takes place not only at the legal and patrimonial level, but also in the field of worship, through a reaffirmation of the presence of the body of st. Benedict. The historiography of Montecassino recovers and amplifies this last point, and finally transforms it into a key event of 1022.
Montecassino Abbey - Registrum by Peter the Deacon - Pope Benedict VIII - Henry
II emperor - Theobaldus abbot of Montecassino