Name
- Cripps, Joseph, MP1
- Crompton, Samuel, inventor1
- Crosbie, Marcus, of Add MS 402371
- Crosthwalt, Leland, of Dublin1
- Culloden, Job Hall, Master of the Corporation of Tanners, Dublin1
- Cummins, James John, Secretary, Palatine Free-School, county Limerick1
- Cunliffe, Ellis, 1st Baronet, MP for Liverpool1
- Cunningham, Joseph, linen merchant, of Crieve1
- Curnin, John, Assay-master, Calcutta Mint1
- Curtis, John, entomologist1
- Curwen, John Christian, of Workington Hall; politician1
- Curzon-Howe, Richard William Penn, 1st Earl Howe1
- Cusack-Smith, William, 2nd Baronet; Baron of the Irish Exchequer1
- Cuthbert, Henry, Lieutenant; formerly of the Gowran Yeomanry1
- D'Arcy, Henry, of Necarn Castle, fl 18461
- Dabbadie, Michael, Chairman of Irish Royal Canal Co.'s creditors1
- Dall, William, correspondent of Sir Robert Peel, fl 18291
- Dallas, George Mifflin, politician and statesman, 1792-18641
- Daniell, Henry, army officer, fl 1829-18671
- Daniell, John Frederic, physicist, chemist, 1790-18451