Name
- Button, William, Assistant Master of the Ceremonies1
- Calandrini, Giovanni1
- Callenberg, August Reinicke Karl, Count1
- Calvert, George, 1st Baron Baltimore, 1580-1632, http://isni.org/isni/000000...1
- Calvin, John, of Add MS 358301
- Campbell, Archibald, 5th Earl of Argyll, 1538-1573, http://isni.org/isni/000000...1
- Carey, Henry, 1st Baron Hunsdon, courtier and administrator, 1526-1596, http://isni.org/isni/000000...1
- Carleton, Dudley, Viscount Dorchester (1628), Ambassador to Venice and Savoy, etc1
- Carroll, William, of Add MS 355031
- Castiglione, Giovanni Battista1
- Castres, Abraham, Consul-General at Madrid, and Envoy to Portugal1
- Cathcart, Charles, 8th Baron Cathcart, Commander of the Force sent against Spanish America1
- Cavalcanti, Guido, of Florence1
- Cave, Ambrose, of Add MS 358301
- Cavellyer, Hector1
- Cecil, Thomas, 1st Earl of Exeter1
- Cecil, William, 2nd Earl of Exeter, Lord Lieutenant of county Northamptonshire1
- Chamberlayne, Thomas, Ambassador to Spain1
- Charles Emmanuel I, Duke of Savoy, 1562-1630, http://isni.org/isni/000000...1
- Charles III, of Spain, 1716-17881