Name
- Cassan, Joseph, Reverend; of Stradbally1
- Chaboteau, Joseph, formerly of the Irish Commissariat Department1
- Cole, Galbraith Lowry, General; GCB1
- Cole, John Willoughby, 2nd Earl of Enniskillen1
- Conyngham, Henry, 1st Marquess Conyngham1
- Coote, Charles Henry, 2nd Baron Castle Coote1
- Coote, Charles, 1st Earl of Mountrath1
- Corbett, William, of Add MS 402391
- Corneille, Daniel, Captain; engineer to Directors General of Inland Navigation, Ireland1
- Crosbie, James, Colonel; MP for county Kerry1
- Crosbie, Marcus, of Add MS 402371
- Cuninghame, Ann, née Gun, correspondent of Sir Robert Peel, fl 1813-18141
- Cusack-Smith, William, 2nd Baronet; Baron of the Irish Exchequer1
- D'Arcy, Peter, of Galway, fl 1814-18181
- Disney, William, barrister and correspondent of Sir Robert Peel, fl 1814-18171
- Dumas, John, correspondent of Sir Robert Peel, fl 1813-18151
- Ennis, Francis, clergyman, fl 1808-18201
- Ennis, Francis, son of Reverend Francis Ennis, fl 18141
- Faden, William, engraver and cartographer, 1749-18361
- Falkiner, Frederick John, 1st Baronet of Abbotstown, Irish politician, 1768-18241