Name
- Maxwell, William, Colonel1
- May, Humphrey, Chancellor of the Duchy of Lancaster and Clerk to the Star Chamber1
- Maydwell, T- M-1
- Mayence, Archbishops Electors of. John Suicard1
- McIntosh, William, Lieutenant-Colonel1
- McMahon, Hugh1
- Melville, James1
- Melville, Robert, of Add MS 358311
- Mendoza, Juan, Marquis de la Ynojosa1
- Mertens, Charles, Dr1
- Meso, Marcos, correspondent of Francisco Delgado, fl 15581
- Metzburg, Baron1
- Mewtas, Peter1
- Mezzo, John, of Debreczen1
- Michell, Peter, Secretary to the E India Company1
- Midleton, Albert1
- Mildmay, Henry, of Add MS 347691
- Mildmay, Walter, of Add MS 358311
- Miles, William Augustus, Agent at Liége1
- Mills, William, Reverend1