Leo of Ostia
Illustration — Modern bust of Leo Leo Marsicanus (meaning "of the Marsi") or Ostiensis (meaning "of Ostia"), also known as Leone dei Conti di Marsi (1046, Marsica – 1115/7, Ostia), was a nobleman and monk of Monte Cassino around 1061 and Italian cardinal from the 12th century. 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, being a librarian: the Chronica Monasterii Casinensis. The chronicler depends largely on Amatus' earlier work, but also on oral traditions and other archives.
Also recorded as Leone Marsicano · Leone Berardi · Cardinale Ostiense · Leone di Montecassino
Leo of Ostia
Lalupa · CC BY 2.5
- Born
- 1046
- Died
- 1115
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Illustration — Modern bust of Leo Leo Marsicanus (meaning "of the Marsi") or Ostiensis (meaning "of Ostia"), also known as Leone dei Conti di Marsi (1046, Marsica – 1115/7, Ostia), was a nobleman and monk of Monte Cassino around 1061 and Italian cardinal from the 12th century. 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, being a librarian: the Chronica Monasterii Casinensis. The chronicler depends largely on Amatus' earlier work, but also on oral traditions and other archives.
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wikidata · Q978985 · wikipedia · Leo of Ostia
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Identity
Identity
Leo finished it at 1075; it is continued by other monastic librarian Peter the Deacon. Pope Urban II created him cardinal deacon in 1088 with the deaconry of Ss. Vito e Modesto. In 1101, Pope Paschal II promoted him cardinal-bishop of Ostia. In 1105, he was appointed cardinal - bishop of Velletri until his death.
Leo of Ostia is recorded with the occupation Catholic priest. Recorded with the occupation historian. Recorded with the occupation writer. Recorded with the occupation monk.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1046
Leo of Ostia was born on 1 January 1046.
1115
Leo of Ostia died on 22 May 1115.
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authority record
- Wikidata, structured authority record Q978985: Leo of Ostia
General reference · Wikidata
reference work
- “Leo of Ostia”, English Wikipedia, consulted as further reading
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The authorities additionally record the headings Leone Marsicano, Leone Berardi, Cardinale Ostiense, Leone di Montecassino and Leone Ostiense.
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 17 August 2026.
Elsewhere in Books
39,529 published records in this field, each with its sources named.
- Leo MaslíahAuthor
- Leo MotzkinAuthor
- Leo MyersAuthor
- Leo NavratilAuthor
- Leo PerutzAuthor
- Leo RostenAuthor
- Leo SlezakAuthor
- Leo the MathematicianAuthor
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