Name
- Bourke, Dermot Robert Wyndham, Lord Naas, 7th Earl of Mayo 18721
- Mackenzie, Colin, of Whitewick Farm, Stogursey, 1893-19571
- Maclagan, Eric Robert Dalrymple, Knight, Director of the Victoria and Albert Museum, 1879-19511
- Macleod, Robert D, of the `Library Review'1
- Macquet de Vaucht, Jean J1
- Mander, Mary Rosalie Glynn, biographer, 2nd wife of Sir Geoffrey Mander, 1905-19881
- Manly, John Matthews, Professor of English Chicago University1
- Mann, James Gow, Surveyor of the Queen's Works of Art1
- Marinis, Tammaro de, manuscript scholar, 1878-19691
- Martin, Grace Mountcastle, of the Department of Speech and Drama at Oklahoma State University, 1892-19681
- Martin, Theodore, KCB Parliamentary agent and translator1
- Masefield, Constance, wife of John Masefield, 1866-19601
- Masefield, John Edward, Poet Laureate, 1878-1967, http://isni.org/isni/000000...1
- Masefield, Judith, book illustrator, daughter of John Masefield, 1904-19881
- Mason, John H, printer1
- Mattheisen, Paul F., Professor of English, 1925-20011
- Maurice, Charles Edmund, author1
- Maurice, Emily Southwood, wife of C E Maurice1
- McRoberts, David, Roman Catholic clergyman, 1912-19781
- Merton, Wilfred, FSA, collector of manuscripts1