Name
- Calderón, Rodrigo, Conde de Oliva, Marqués de las Siete Iglesias1
- Campeggi, Lorenzo, Bishop of Cesena, Bishop of Senigallia1
- Carafa, Carlo, Cardinal 15551
- Carafa, Family1
- Carafa, Giovanni, Duke of Paliano1
- Castracani, Alessandro, Bishop of Nicastro, Bishop of Fano, papal nuncio to Portugal 16341
- Catena, Girolamo, historian and member of the Sacra Consulta1
- Catherine, St of Siena1
- Cavalleroni, Girolamo, papal nuncio, governor, Cardinal and Archbishop of Aix, 1597-16851
- Ceruti, Giovanni Antonio1
- Cesi, Pier Donato, the younger, Cardinal 16411
- Ceva, Francesco Adriano, Cardinal 16431
- Charles Emmanuel I, Duke of Savoy, 1562-1630, http://isni.org/isni/000000...1
- Charles IX, King of France, 1550-15741
- Charles IX, of France, Catherine de Medici1
- Charles, Prince of Simmern, later Elector Palatine of the Rhine, son of Prince Charles Louis1
- Chigi, Fabio, Cardinal 1652, Pope Alexander VII 16551
- Chigi, Family1
- Chigi, Flavio, Cardinal 16571
- Christine, of France, daughter of Henry IV of France, Duchess of Savoy1