Name
- Byng, John, 1st Earl of Strafford, army officer, 1772-18601
- Cahill, Charles Staunton1
- Cairns, Nathan, merchant, of Liverpool1
- Calder, William Henry, of the Treasury1
- Callaghan, Gerard, President, Cork merchants' committee1
- Campbell, Charles, Captain; Royal West Meath Militia1
- Campbell, Hugh, Hon. FSA1
- Campbell, James, Lord Provost of Glasgow1
- Campbell, John, Secretary to Society for Gaelic Schools1
- Canning, Charles John, 1st Earl Canning, statesman and Governor-General of India, 1812-18621
- Carr, Robert James, Bishop of Chichester 1824, and Worcester 18311
- Carrick, Mary, of Glasgow1
- Cassidy, John, of Add MS 403451
- Cecil, Emily Mary, wife of James, 1st Marquess of Salisbury1
- Chads, Henry Ducie, Admiral GCB1
- Chadwick, Edwin, Knight, social reformer and civil servant, 1800-18901
- Chamber of Commerce, Dublin1
- Chancery of Ireland1
- Chapman, John, shipowner, of London1
- Charlton, Edmund Lechmere, MP1