Name
- Colquhoun, Daniel, Lieutenant-Colonel; Assistant Adjutant-General, Ireland1
- Conolly, Reverend1
- Cooke, Edward, Under-Secretary of State, 1755-18221
- Cooper, Edward Synge, MP1
- Coote, Charles Henry, 2nd Baron Castle Coote1
- Coote, Charles, 1st Earl of Mountrath1
- Corry, William Isaac, Port Surveyor at Newry1
- Costello, Charles, Barrack-master at Ballaghaderreen1
- Coulson, Foster, Lieutenant-Colonel; landwaiter at Belfast1
- Cowell, Anne, Mrs; of Dublin1
- Crosbie, James, Colonel; MP for county Kerry1
- Crosbie, Marcus, of Add MS 402371
- Cuninghame, George, of Mount Kennedy, né Gun, correspondent of Sir Robert Peel, fl 1801-18171
- Cuthbert, John1
- Danvers, Henry, army officer and correspondent of Charles Whitworth, 1st Earl Whitworth, fl 18141
- Davies, S F, of Mallow, correspondent of Sir Robert Peel, fl 18141
- Devereux, John, army officer and United Irishman, 1778-18601
- Dickson, Stephen, correspondent of John Fitzgibbon, 2nd Earl of Clare, fl 1813-18141
- Duffy, Thomas, correspondent of Sir Robert Peel, fl 1813-18171
- Dugdale, Dugdale Stratford, politician, 1773-18361