Name
- Crew, Agnes1
- Crowley, Aine, of Bantry Cork alias Anne1
- Cruce, Morogh1
- Curtin, Cornelius1
- Curzon, Darea, Baroness Zouche of Harringworth, 1860-19171
- Curzon, Robert, 14th Baron Zouche of Harringworth, traveller and collector of manuscripts, 1810-18731
- Cymmrodorion Society1
- Cynddelw1
- Céitinn Irish historian, Séathrún1
- D'Arcy, Family1
- D'Arcy, John, junior1
- Dafydd Nanmor, poet, fl 15th century1
- Davies, John, Knight, poet, lawyer and Attorney-General for Ireland, 1569?-16261
- De Burgh, Richard, 2nd Earl of Ulster1
- De Burgh, William, 3rd Earl of Ulster1
- Deane, Peggy, subject of a poem, fl 17651
- Deidier, Antoine, abbot, physician and mathematician, 1670-17461
- Deig, -, subject of a biography, fl 1750-17601
- Denison, John Law, music administrator and horn player, 1911-20061
- Dennum, E, author of a letter to Queen Elizabeth I from Venice, fl 15641