- Concini, Giovanbattista1
- Conspiracy of Catiline (Rome : 65-62 B.C.)1
- Constantine XI Palaeologus, Emperor of the East, 1405-14531
- Crusades1
- Crusades (Second) (1147-1149)1
- Cynics (Greek philosophy)1
- De motu animalium (Aristotle)1
- Didactic poetry, Latin1
- Didactic poetry, Latin (Medieval and modern)1
- Dionysius, the Areopagite, Saint, active 1st century1
- Diseases1
- Drama1
- Eastern churches--Liturgy1
- Elegiac poetry, Latin1
- Epigrams, Latin1
- Ethics1
- Ethics in the Bible1
- Europe--Holy Roman Empire1
- Eutychians1
- Evangeliaries1