Name
- Marschall, Carl Joseph, Imperial Minister in Switzerland1
- Mas, -, correspondent of Thomas Pelham Holles, 1st Duke of Newcastle, fl 17481
- Matalis, Abbé1
- Mathew, William, Governor of the Leeward Islands 17041
- Maximilian Joseph I, Elector Duke of Bavaria1
- Maydwell, Cutts1
- Meeren van der)1
- Mejer, J- E-, of Add MS 328401
- Mello de Castro e Mello, Antonio1
- Mello de Pinto, Luis, Chev.; Portuguese Envoy to England1
- Melo, Joachim Antonio, Marques de San Gil, Spanish Ambassador at the Hague, fl 1736-17421
- Mignée, Georges1
- Milbanke, Francis1
- Miller, Thomas, afterwards 1772 5th Baronet1
- Missy, César, theologian, chaplain to George III, and book collector, 1703-17751
- Montagu, A-, Mrs1
- Montemagni, Coriolano miscopied 'Conot ', Senator of Florence1
- Moore, Jonas, Captain1
- Mordaunt, John, Major-General; afterwards Knight; MP for Cockermouth1
- Munchberg1