Name
- Calvert, Harry, Colonel1
- Campbell, Colin, Colonel afterwards Brigadier-General1
- Campbell, George William, Marquis of Lorne, 6th Duke of Argyll (1806)1
- Campbell, John, 1st Baron Cawdor1
- Campbell, John, 4th Earl and 1st Marquis (1832) of Breadalbane1
- Canning,, Henry, Consul-General at Hamburg1
- Capel-Coningsby, George, Viscount Malden; 5th Earl of Essex 17991
- Carr, R-, of Add MS 331091
- Carr, Robert James, Bishop of Chichester 1824, and Worcester 18311
- Castiglioni, Marquise de1
- Cavendish, Georgiana, 1st wife of William, 5th Duke of Devonshire1
- Cavendish, Henry, 2nd Baronet1
- Cavenough, Mary1
- Cely, Comte de1
- Chester, Robert, of Add MS 331101
- Churchill, George Spencer, 4th Duke of Marlborough1
- Clarke, J-, Director of the Equitable Assurance Company1
- Clarke, W- H-1
- Clinton, John, 4th son of Henry, 2nd Duke of Newcastle1
- Cockburn, John1