- Corpus juris civilis1
- Correspondence1
- Correspondence (Cyprian, Saint, Bishop of Carthage)1
- Corsino, Pietro di1
- Cosimo II, Grand Duke of Tuscany, 1590-16211
- Cosimo III, Grand-Duke of Tuscany, 1642-17231
- Costapellegrina, Giovan Andrea1
- Council of Pisa--(2nd : 1511-1512)1
- Covoni, Luigi de1
- Cristofano, Filippo di1
- Criticism, Textual1
- Crusades (Fifth) (1218-1221)1
- Cueva y de Castilla, Beltrán III de la, Duke of Alburquerque, -16121
- Customs administration1
- Dal Borgo family1
- Dante Alighieri, 1265-13211
- Davanzati, Niccolò1
- De consolatione philosophiae (Boethius)1
- De finibus bonorum et malorum (Cicero, Marcus Tullius)1
- Death1