Name
- Courtenay, Thomas, Inspector of Stamp Duties, Ireland1
- Creighton, John, Lieutenant-Colonel1
- Crofton, James, Chief Clerk to Irish Treasury1
- Croker, Henry, of the Dublin Lying-Hospital1
- Crosbie, Marcus, of Add MS 402371
- Dabbadie, Michael, Chairman of Irish Royal Canal Co.'s creditors1
- Darley, Frederick, builder and alderman of Dublin, 1764-18411
- Davis, John James, correspondent of William Gregory, fl 1815-18171
- Davy, Edmund, chemist, 1785-18571
- Disney, William, barrister and correspondent of Sir Robert Peel, fl 1814-18171
- Downes, John, of Loughrea, customs officer, fl 1791-18131
- Dunn, Joseph, alias "Daddy", of Preston, clergyman and entrepreneur, 1746-18271
- Dwyer, Francis, clerk and correspondent of Sir Robert Peel, fl 18171
- Eardley, Francis, of Castledermot; correspondent of Sir Robert Peel, fl 1814-18181
- FitzGerald, William, tax inspector, Ireland, fl 1813-18181
- FitzGibbon, Richard Hobart, 3rd Earl of Clare, army officer and politician, 1793-18641
- FitzWilliam, Charles William, 5th Earl FitzWilliam, politician, 1786-18571
- Fitzsimons, Edward John Bourke, writer and tax inspector, c 1787-18241
- Forbes, George John, Viscount Forbes, son of George, 6th Earl of Granard, 1785-18361
- Foster, John Leslie, Justice of C P, Ireland1