Name
- Carafa, Decio, cardinal and Archbishop of Naples, 1556-16261
- Cardenas, Luis, Principe1
- Cardini, Raffaello1
- Castro, Francisco de, Conde de Castro Duque de Taurisano1
- Centini, Felice, Cardinal; Bishop of Macerata1
- Cesi, Pietro Donato, Cardinal1
- Chanut, Pierre, French diplomalist1
- Charles Emmanuel I, Duke of Savoy, 1562-1630, http://isni.org/isni/000000...1
- Charles I, King of England, Scotland and Ireland, 1600-16491
- Charles IX, King of France, 1550-15741
- Charles, Duke of Mantua1
- Cianfanaglia, Marsilio, of Cortona1
- Cibo, Francesco Maria1
- Cioli, Andrea, Secretary of State of Tuscany1
- Correr, Giovanni, Venetian ambassador1
- Cortigiani, Francesco1
- Cosimo III, Grand Duke of Tuscany1
- Costa, Pietro Francesco, Bishop of Savona1
- Cueva, Alfonso della, Marquès de Bedmar, Spanish ambassador at Venice1
- Duchy of Savoy1