Name
- Cadogan, Honoria Louisa, wife of George, 3rd Earl Cadogan, 1813-19041
- Caetani, Enrico, Cardinal and diplomat, 1550-15991
- Caietano, Pietro1
- Callaghan, Gerard, President, Cork merchants' committee1
- Cameron, Archibald, MD; of Add MS 355911
- Campbell, Hugh, Hon. FSA1
- Campbell, James, Major-General; KCB1
- Canning, George, Prime Minister, 1770-18271
- Cannon, Thomas, of Add MS 355911
- Capell, Algernon, 2nd Earl of Essex1
- Capron and Co, solicitors1
- Carbry, John1
- Cardevac, Louis, marquis d'Havrincourt, French Ambassador in Sweden1
- Carleton, John, Alderman of Dublin1
- Carr, Jane, formerly Perceval née Wilson wife of Sir H W Carr KCB, widow of Spencer Perceval1
- Carroll, Thomas, of Cork1
- Carter, William, building contractor1
- Carteret, John, Baron Carteret, Earl Granville, Secretary of State, etc1
- Cash, John, Lord Mayor of Dublin 18131
- Catherine II, Empress of Russia1