Name
- McCrea, John Dobree, Captain; RN2
- McNeill, John, Knight, diplomat and surgeon, 1795-1883, http://viaf.org/viaf/1024041952
- Melvill, James Cosmo, KCB, Sec E India Co2
- Merivale, Herman, DCL, Indian Under-Sec2
- Milbanke, John Ralph, 8th Baronet, afterwards Milbanke-Huskisson; Minister at The Hague2
- Miller, William, of Marischal College, Aberdeen2
- Millingen, Julius M-, Physician to the Sultan of Turkey2
- Montebello, Comte de, Secretary of the French Embassy, Madrid2
- Montefiore, Joseph Sebag, Knight 18962
- Montefiore, Moses Haim, philanthropist, 1784-18852
- Morse, C- F-2
- Moüy, Charles, Comte, French Ambassador to Turkey2
- Napier, Edward Hungerford Delaval Elers, Colonel2
- Nash, William Watkins, of Birmingham2
- Nevin, Robert Jenkins, DD, Rector of St Paul's American Church Rome2
- Norman, John, engineer, fl 1863-18642
- Northcote, Stafford Henry, 8th Baronet, 1st Earl of Iddesleigh, politician, 1818-18872
- O'Donnel, Arnout2
- O'Hagan, Thomas, 1st Baron O'Hagan2
- Olibert, E-, agent in Spain for the 2nd Duke of Wellington2