Name
- James IV, of Scotland1
- Jephson, John, of Add MS 381461
- Jermyn, Henry, Baron and titular Earl of Dover; 3rd Baron Jermyn 17031
- Jermyn, Judith, wife of Henry, Baron Dover1
- John II, King of France, 1319-13641
- John, King of England and Lord of Ireland, 1167-12161
- Jones, Robert, Comptroller of the Seal in KB1
- Jones, William, Keeper of the Seal in CP1
- Judith, alias Juetta; wife of Waltheof, Earl of Northumbria1
- Kemp, John, Archbishop of York1
- Kenmore, Richard, notary public in Meath diocese1
- Keslingbury, John1
- Killigrew, Henry, of Add MS 381371
- King and Lochee, booksellers1
- Kings of Denmark1
- Knight, William, of Add MS 381461
- Knolles1
- Knyvett, Henry1
- Kynardesey, John1
- La Tour d'Auvergne, Henri, Duc de Bouillon, of Add MS 381391