- Cambrai, League of, 15081
- Canonists1
- Cardinals--Biography1
- Catherine, of Siena, Saint, 1347-13801
- Catholic Church. Archdiocese of Breslau (Germany)1
- Catholic Church. Archdiocese of Reims (France)1
- Cecco, d'Ascoli, 1269-13271
- Censures, Ecclesiastical1
- Cesare d'Este, Duke of Modena and Reggio, 1552-16281
- Charlemagne, Emperor, 742-8141
- Charles VI, King of France, 1368-14221
- Charles VIII, King of France, 1470-14981
- Charles, Duke of Burgundy, 1433-14771
- Childhood of Jesus Christ1
- Children1
- Chivalry1
- Christian ethics--Middle Ages1
- Christian heresies--Middle Ages1
- Christian heretics1
- Christian life--Catholic authors1