He was (perhaps) a native of Trier, and became a Benedictine. He successfully opposed the teachings of Berengarius, which were considered heretical by the Pope, defending the measures of Gregory VII during the Investiture Controversy.
He is the author of numerous works in theology, hagiography, grammar, rhetoric and music; and is the author of the earliest medieval treatise on ars dictaminis, or letter-writing (De dictamine). Many of his letters are found in the works of St. Peter Damian.
- Patrologia Latina, CXLV, 621-634.
- I. S. Robinson, The Papacy 1073-1198 (1990), p. 214.
- Miranda, Salvador. "ALBERICO, seniore, O.S.B.Cas. (ca. 1030-October 17, 1088)". The Cardinals of the Holy Roman Church. Florida International University Libraries. OCLC 53276621.
This article incorporates text from a publication now in the public domain: Shahan, Thomas Joseph (1907). "Alberic of Monte Cassino". In Herbermann, Charles (ed.). Catholic Encyclopedia. Vol. 1. New York: Robert Appleton Company.