Name
- Barrett, Richard, correspondent of Sir William Hamilton, fl 17931
- Belchier, John1
- Brodie, William Douglas, Consul at Malaga1
- Burgh, John Thomas, 13th and 1st Earl of Clanricarde, army officer, 1744-18081
- Cadir Bey, Abdul, Ottoman naval officer, fl 17991
- Caire, Laurent, Commissaire député de Toulon1
- Cataneo, Principe di San Nicandro1
- Catherine II, Empress of Russia1
- Chanquion, Philip, British Consul in Sicily1
- Charles IV, of Spain1
- Cholmondeley, George James, 1st Marquess of Cholmondeley1
- Churchill, William, formerly of Henbury, county Dorset1
- Clark, James, of Add MS 412001
- Cleghorn, Hugh, historian and colonial administrator, 1752-18371
- Clement XIII, Pope1
- Commerell, Frederick1
- Connor, Bernard1
- Cosby, Phillips, Vice-Admiral; Admiral 17991
- Coxe, Thomas, of Add MS 412001
- Craven, Charles, Captain; RN1