Name
- Loss, Johann Adolph, Graf, Saxon Minister of State1
- Lucchesini, Geronimo, Prussian Minister in Poland1
- Mabbes, Joseph, Quaker, from Fish Kill1
- Macdonald, James, Baronet, of Add MS 344121
- Mackenzie, John, of Add MS 344671
- Macnamara, John, MP for Leicester1
- Maitland, James, 8th Earl of Lauderdale1
- Majeur, Louis1
- Maltzan, Count, Prussian Minister in England1
- Manners, Charles, 4th Duke of Rutland1
- Mante, Thomas1
- Maret, of the French Foreign Office1
- Marsh, George, Clerk of the Acts in the Navy office1
- Martin, Samuel, of Whitehaven1
- Mary, Banker in Paris1
- Mash, Thomas B-, 1st Clerk in the Lord Chamberlain's 0ffice1
- Mat1
- Matilda, of Add MS 344141
- McMahon, John, 1st Baronet 1817, Colonel; Secretary to the Prince of Wales1
- Mease, Mathew, Merchant1