Background
Reputedly a descendant of the Counts of Tusculum, he was offered in 1115 to the monastery of Monte Cassino.
archivist Librarian politician writer
Reputedly a descendant of the Counts of Tusculum, he was offered in 1115 to the monastery of Monte Cassino.
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. 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 World War 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, of which he compiled a cartulary (Registrum Petri Diaconi).
Besides editing the existing chronicle of Monte Cassino (and introducing many falsehoods), he wrote several historical works: "De viris illustribus Casinensibus". "De ortu et obitu justorum Casinensium".
"De Locis sanctis"; Disciplina Casinensis".
"Rhythmus de novissimis diebus". Peter forged, under the name of Gordian, the Passion of Saint Placidus.
He is vain and occasionally untruthful, but an entertaining writer
