Name
- Mackenzie, Francis Humberston, Baron Mackenzie of Kintail, Lord Seaforth1
- Mackenzie, Kenneth, Earl of Seaforth1
- Main, James L.1
- Manger, Daniel, of Folkestone1
- Martyn, Charles Fuller, of Calcutta1
- Maty, Matthew, Dr Principal Librarian British Museum1
- Meyrick, John, of Add MS 420711
- Minchin, Humphrey, Clerk of the Ordnance 17831
- Moccia, Paolo1
- Murray, John, Ambassador to Turkey (1765)1
- Murray, Peter1
- Mylne, Robert, architect and engineer1
- Nassau de Zuylestein, William Henry, 4th Earl of Rochford1
- Navy of England1
- Nelson, Horatio, Viscount Nelson, naval officer, 1758-1805, http://isni.org/isni/000000...1
- O'Hara, William Henry King, Captain; RN1
- Oliver, John, Rector of Little Laver, county Essex; President of Magdalen College, Oxford 16441
- Ortolani, Giuseppe Emmanuele, of Palermo1
- Osborn, John, Chargé d'Affaires at Naples1
- Osborne, Francis Godolphin, Marquess of Carmarthen, 5th Duke of Leeds1