Name
- Mahon, John, of Add MS 385711
- Manners, Augusta, Miss1
- Manning, James, of Add MS 385741
- Mantor, J-1
- Marietti, Luigi, of Milan1
- Markham, William, Headmaster of Westminster School, Archbishop of York 17771
- Marsh, John, of Upton, in Hawkesbury1
- Marshall, Reverend1
- Martindale, John, Secretary of White's1
- Mauduit, Israel, FRS1
- Maxwell, John James, 2nd Earl of Farnham1
- Medley, Edward, of Barcombe1
- Medley, Family1
- Middleton, Charles, Baronet 1781, Admiral; 1st Baron Barham 18051
- Montagu Scott, Charles William Henry, 4th Duke of Buccleuch1
- Montagu, John, 4th Earl of Sandwich, statesman, 1718-17921
- Montagu, William, 5th Duke of Manchester1
- Montessuy, Baron de1
- Moore, James Carrick, surgeon and author1
- Moore, John, Bishop of Bangor 1775, Archbishop of Canterbury 17831