Name
- Crofts, George, of Churchtown, county Cork1
- Croke, Richard1
- Cromwell, Family1
- Crosse, Family1
- Crowland, Family1
- Dalton, Family1
- Danvers, Family1
- Darell, Family1
- Davys, Henry, Commissioner of Enquiry into forfeited estates in Ireland, fl 1671-16901
- Dawkinson, Family1
- Deincourt, Family1
- Deneband, Family1
- Dopping, Anthony, Bishop of Meath, 1643-16971
- Douglas, James, army officer, 1645-16911
- Drax, Richard, former owner of a collection of statutes of England and documents relating to London, fl 15th century1
- Drummond, John, 1st Earl of Melfort, politician and Jacobite, 1649-17141
- Drurye, Walter, examiner of the order of the coronation of James I, and Anne of Denmark, fl 16031
- Dudley, Robert, 1st Earl of Leicester, courtier and statesman, ?1532-15881
- Dynham, Family1
- Echlin, Henry, 1st Baronet, Irish barrister and judge, 1652-17251