Name
- Ker, John, 1st Duke of Roxburghe1
- King, Peter, Baron King, Chief Justice of Common Pleas1
- Kingston Manor, Berkshire1
- Kuyper, Abraham, Rector of Amsterdam Free University1
- Lalling Manor in Latchingdon, Essex1
- Le Coutieur, Philip, Rector of St. Martin's, Jersey1
- Le Despenser, Hugh, Earl of Winchester1
- Lee, Francis Henry, of Add MS 361251
- Lee, William, Chief Justice of the King's Bench (1737)1
- Legh, Family1
- Leslie, Henry, Bishop of Down and Connor, afterwards of Meath1
- Leslie, John, Bishop of Raphoe1
- Leslie, Robert, Bishop of Dromore1
- Lewes Priory, Sussex1
- Longchamp, Family1
- Longford, Richard1
- Lovell, Family1
- Ludgershall, Family1
- Luttrell, Francis, of Sloane MS 8561
- Mackenzie, George, of Delvin1