Name
- Loyd, Samuel Jones, Baron Overstone1
- MacViccar, Jos-1
- Madden, Frederic, Knight, Keeper of Manuscripts, British Museum, 1801-18731
- Marangoni, Giovanni1
- Marmora, Alberto, General1
- Maskell, William, Reverend; of Add MS 367171
- Massari, Giuseppe, of Add MS 367161
- Massey, William Nathaniel, MP1
- Maule, Fox, 11th Earl of Dalhousie, 2nd Baron Panmure, afterwards Maule-Ramsay, army officer and politician, 1801-18741
- Medici, Giacomo, General1
- Melvill, E-1
- Minghetti, Marco, of Add MS 367161
- Morgan, Augustus, mathematician and historian, 1806-18711
- Murchison, Roderick Impey, 1st Baronet, geologist, 1792-18711
- Newton, Charles Thomas, KCB, archaeologist1
- Oldfield, Edward1
- Orléans, Henri Eugène Philippe Louis d', Duc d'Aumale1
- Panizzi, Anthony, Knight, librarian at the British Museum, 1797-1879, http://isni.org/isni/000000...1
- Pantaleoni, D-, MD1
- Pellion di Persano, Carlo, Conte1