Name
- Creighton, Lionel A-1
- Cromwell, Oliver, Lord Protector of England, Scotland and Ireland, 1599-1658, http://isni.org/isni/000000...1
- Cunnell, P D, Mrs of Dorking1
- Dartford Nunnery, Kent1
- David II, of Scotland1
- Davison, M, former owner of a seal of Hugh de Sutton, between 14th century-20th century1
- Dawnay, Cecilia Maria Charlotte, Lady of the Bedchamber to Queen Victoria, 1838-19101
- Day, W H, former owner of an impression of a seal, fl 19211
- Dean and Chapter of Lincoln1
- Deanery of Stow, Lincolnshire1
- Delisle, Léopold Victor, librarian and historian, 1826-19101
- Derbyshire County Museums1
- Dewick, Edward Chisholm, clergyman, lecturer and author, 1884-19581
- Diocese of Coventry and Lichfield1
- Diocese of Kilmore1
- Donion, Ralph, Canon of St Paul's, d 13181
- Donne, John, poet and clergyman, 1572-1631, http://isni.org/isni/000000...1
- Dorrien, Walter Montgomery, clergyman, 1851-19241
- Doubleday, John, former owner of an impression of the seal of Franchewille, fl after 13th century1
- Dowdall, George, Archbishop of Armagh, 1487-15581