Name
- Lomonosov, Sergei Grigorovich, Russian diplomatist1
- Longinov, Nikolai Mikhailovich, Russian statesman1
- Lorenz, of the Austrian Consulate at Warsaw1
- Louis XVIII, of France1
- Lowther, William, Viscount Lowther, 2nd Earl of Lonsdale1
- Maitland, James, 8th Earl of Lauderdale1
- Manners, John Henry, 5th Duke of Rutland1
- Manvers, Cornelia1
- Mappes, Henry and Conrad, wine merchants, of Mainz and Hattenheim1
- Maria Elizabetha Francesca, wife of Reinhardt, Archduke of Austria1
- Marine Society1
- Martens, Baron? -, formerly Russian army officer; alias 'Mr. Miller'1
- Martin de Tyrac, Marie Louis Auguste, Vicomte de Marcellus1
- Mary, of Scotland1
- Matuszewicz, Andrey Jozef, Count1
- Medem, Carl, of Neu Appussen, near Schranden1
- Meierovich, Joseph, Russian army officer1
- Mettemberg, Joseph, medical practitioner1
- Meyendorff, A.?, Baron1
- Mitchell, John, of Add MS 472891