Name
- Castelnau, Michel de, Sieur de Mauvissière, French envoy to England1
- Catesby, Mrs1
- Cezi, French Ambassador in the Levant1
- Charisius, Peter, Danish Resident in Holland1
- Charles Louis, Elector Palatine of the Rhine, 1617-16801
- Cheverton, Richard, Governor of the Eastland Company1
- Christian IV, of Denmark1
- Christina, ex-Queen of Sweden1
- Cokayne, William, of Add MS 41551
- Collinson, William, Captain1
- Compton, Henry, Bishop of London1
- Conway, Edward, 2nd Viscount Conway and 2nd Viscount Killultagh, politician and book collector, 1594-16551
- Cooper, Anthony Ashley, 1st Earl of Shaftesbury, politician, 1621-16831
- Cooper, Thomas, army officer, fl 16561
- Cooper, of Add MS 41591
- Cosin, John, Master of Peterhouse, Cambridge, Bishop of Durham (1660)1
- Cotton, John, minister of Boston, New England1
- Coventry, Thomas, 1st Baron Coventry1
- Coyet, Peter Julius, Swedish diplomatist1
- Craven, William, Earl of Craven 16651