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12th century Italian monk, librarian and chronicler From Wikipedia, the free encyclopedia
Peter the Deacon[a] (fl. 1115–1159) was the librarian of the abbey of Montecassino and continuator of the Chronicon monasterii Casinensis, usually called the Monte Cassino Chronicle in English. The chronicle was originally written by Leo of Ostia. According to both Chalandon and Lord Norwich, Peter is a poor historian and writer, much inferior to Leo.
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (July 2024) |
Reputedly a descendant of the Counts of Tusculum, he was offered in 1115 to the monastery of Monte Cassino. About 1127 he was forced to leave the abbey and retired to the neighbouring Atina (Atina, Lazio), because he had supported Abbot Oderisius, who had been deposed by Pope Honorius II. In 1131 he returned to the abbey owing to the death of Pope Honorius. In 1137, he appeared before Emperor Lothair II, then in Italy, on behalf of his monastery. The sovereign was so pleased with him that he appointed him his chaplain and secretary, and would probably have attached him permanently to his person had not Abbot Wibald considered Peter's return necessary to the abbey.
In 1131 on his return to Monte Cassino Peter became librarian and keeper of the abbey archives.
After a long period during which historical sources report nothing about him, his name, Petrus Egidii Tusculanensis, last appears in an act of donation of 1154. His death had to take place after 1159, the initial deadline for the dating of the codex Casinense 47, in whose obituary on February 26 his name is marked (Petrus diaconus et monacus), the only one, among those of many deacons of the same name commemorated there, which appears written in capital letters.
The 1913 Catholic Encyclopedia describes Peter as "vain and occasionally untruthful, but an entertaining writer". His works, enumerated in Patrologia Latina, CLXXIII, 763-1144, include a cartulary of the abbey archives (Registrum Petri Diaconi) and several historical works:
Peter edited the existing chronicle of Monte Cassino, introducing many falsehoods. He also forged, under the name of Gordian, the Passion of St. Placidus.
This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "Petrus Diaconus". Catholic Encyclopedia. New York: Robert Appleton Company.
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