424 entries have been contributed to by Dews, D Colin:
- Mitchell, Joseph (c1807-1876)
- Mitchell, Thomas, DD (1844-1915; e.m. 1866)
- Mole, Bob (1927-2010)
- Molineux, James (1791-1873; e.m. 1836)
- Morel family, of Cardiff
- Morley family of Bradford
- Morley, West Riding
- Morrell, Robert (1799-1867)
- Morse family
- Mortimer, Sir Charles Edward, CBE (1886-1974; e.m. 1910)
- Moses, James John Hamlyn (1873-1946)
- Mould, James Diggle (1856-1935)
- Myners, Paul (1948-2022)
- Neal, Arthur (1862-1933)
- Neal, Sir Francis Leonard, CBE (1913-2008)
- Needler, Frederick (1864-1932)
- Nicholson, Samuel (1811-1887; e.m. 1829)
- Oastler, Richard (1789-1861)
- Oastler, Robert (1748-1820)
- Odell, Joseph (1846-1923; e.m. 1866)