Name
- Le Poor Trench, Power, Archbishop of Tuam1
- Lefèvre, Stanislas, Lieutenant; of Add MS 372801
- Lennox, Charles, 4th Duke of Richmond and Lennox1
- Leslie, A-1
- Leslie, John, Bishop of Elphin1
- Lindsay, Charles, Archdeacon of Kildare1
- Linhares, Comte de1
- Llexa Ynicmez, Manuel, of Cadiz1
- Lock, Edward Hawke, Secretary, Admiralty Office, Bombay1
- Lockhart, John Gibson, of Add MS 373131
- Loftus, - Gen. William, Lieutenant; MP1
- Los Rios, Conde de Fernan Nuñez, Duque de Montellano1
- Louis XVIII, of France1
- Louis-Philippe, of France1
- Low', Joseph1
- Lubomirski, Casimir, Prince1
- Lushington, James Law, Knight, General and chairman of East India Company, 1779-18591
- Macartney, Arthur Chichester, Assistant Barrister for county Louth1
- Macdonald, J-, Colonel1
- Macdonnell, Eneas, Irish political writer1