Name
- Mary I, of England1
- Mascarenhas, Fernando, Marques de Fronteira, of Add MS 343311
- Maximilian I, Elector of Bavaria1
- Mayle, Martin, of Blunham, county Bedfordshire1
- Mazarin, Giulio, Cardinal 16411
- Meadows, Philip, of Add MS 341951
- Menezes, Luis, Conde de Ericeyra1
- Merchant Adventurers1
- Mesmes, Jean Antoine, Comte d'Avaux, French Ambassador to the Hague, etc1
- Methuen, Paul, Envoy Extraordinary to Portugal1
- Milton, John, of Add MS 335091
- Mompesson, Roger1
- Monck, George, 1st Duke of Albemarle, army officer, 1608-16701
- Montagu, Charles, 4th Earl and (1719) 1st Duke of Manchester1
- Montagu, Charles, Baron Halifax 1700; Earl of Halifax 17141
- Montagu, Edward, Earl of Sandwich, Envoy to Spain1
- Morell, Walter, of county Hertfordshire1
- Moura y Guzman, Anielo1
- Mun, Thomas1
- Naalde, Arnold, of Middleburgh1