Name
- MacDonnell, Randal, Earl of Antrim1
- Mainwaring, Eliza1
- Maria Elisabeth, Governor of the Netherlands, daughter of Emperor Leopold I1
- Marmion, Henry1
- Martin, Michael1
- Massue, Henri, 2nd Marquis de Ruvigny, soldier and diplomat, 1648-17201
- Maunier, Paolo, Procuratorc di Terra Santa1
- Maurice, Henry, DD1
- Maxwell, Robert, 1st Earl of Nithsdale1
- McCarthy, Sarah, widow of Daniel McCArthy, of Pallace1
- McCarty, Donogh, 4th Earl of Clancarty1
- Meade, John, Kt., MP for Dublin University, and Chancellor of Tipperary1
- Mesmes, Jean Antoine, Comte d'Avaux, French Ambassador to the States - General1
- Methuen, Paul, KB, Ambassador to Spain and Portugal, afterwards Secretary of State1
- Moles, Francesco, Duke of Pareto, called 'Duke of Moles'1
- Monk, Charles1
- Montagu, Heneage, Treasurer of the Crown Jewels1
- Mordaunt, Charles, 1st Earl of Monmouth and 3rd Earl of Peterborough, Commander-in-Chief in Spain, and Ambassador in Spain, Germany, Rome, etc, c 1658-17351
- Moreton, William, Dean of Christchurch and (1705) Bishop of Meath1
- Morris, Marmaduke, Vicar of Lanellon1