Leo Marsicanus (meaning of the Marsi) was of noble birth and became a monk in Monte Cassino around 1061. In Monte Cassino, he became a friend of Desiderius of Benevento, later Pope Victor III, and it was to him that Leo dedicated his most famous work as an historian and chronicler: the Chronicon Monasterii Casinensis, usually called the Montecassino Chronicle in English. The chronicler depends largely on Amatus' earlier work, but also on oral traditions and other archives. It was only begun after 1098 and Leo finished it at 1075; it is continued by the monastic librarian Peter the Deacon. In 1101, Pope Paschal II created him cardinal-bishop of Ostia. Silver denarius of the Marsian Confederation, during the Social War (89 BC). ... The restored Abbey. ... Events Normans conquer Messina in Sicily Pope Alexander II elected The building of the Speyer Cathedral in Speyer, Germany, had begun to be built. ... The Blessed Victor III, born as Dauferius (Benevento, 1026? – September 16, 1087), Pope (May 24, 1086 until his death), was the successor of Pope Gregory VII (1073–85). ... Amatus of Montecassino (Amatus Casinensis), a Benedictine monk at the Abbey of Montecassino is one of three Italo-Norman chroniclers, the others being William of Apulia and Goffredo Malaterra. ... Events First Crusade: end of the siege of Antioch. ... Events Revolt of the Earls. ... Peter the Deacon (French: ) was the librarian of the abbey of Montecassino and continuator of the Chronicon Monasterii Casinensis, usually called the Montecassino Chronicle in English. ... Events A second wave of crusaders arrives in the newly established Kingdom of Jerusalem, after being heavily defeated by Kilij Arslan I at Heraclia. ... Paschal II, né Ranierius (born in Bleda, near Forlì, Romagna - d. ... A cardinal is a senior ecclesiastical official, usually a bishop, of the Roman Catholic Church, a member of the College of Cardinals which as a body elects a new pope. ... Two bishops assist at the Exhumation of Saint Hubert, who was a bishop too, at the église Saint-Pierre in Liège. ... The Bishop of Ostia was the ecclesiastical head of the Italian Catholic diocese of Ostia. ...

Sources

• Norwich, John Julius. The Normans in the South 1016-1130. Longmans: London, 1967.
• Catholic Encyclopedia article