Author
- Carlo de' Medici1
- Cassius Dio1
- Castello del Vivaro1
- Castelvetro, Giacomo, 1546-1616?1
- Cattanei family1
- Cavalli1
- Charles IX of France1
- Charles, Prince of Viana1
- Church of the East1
- Cicero1
- Cipriano de Valera1
- Clare of Assisi1
- Claudian1
- Cofradía de Nuestra Señora de las Nieves (Valladolid, Spain)1
- Concini family1
- Confraternity of Saint Eulalia and Saint Gênes1
- Confraternity of St. Peter martyr (Palencia)1
- Confraternity of St. Silvester (Zadar, Croatia)1
- Consiglio Generale1
- Conte Gabuzzi1