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- Mond, Peter (Mr) February 24, 1948 -
- Money, Ernle (Mr) February 17, 1931 -
- Money, Leo (Mr) 1870 - September 25, 1944
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- Monson, William (Hon.) 1829 - 1898
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- Montagu, Charles (Mr) February 20, 1954 -
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- Montagu, John (Mr) April 11, 1943 -
- Montagu, Robert (Lord) 1825 - May 6, 1902
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- Montagu, William (Mr) 1785 - March 6, 1852
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- Montague, Frederick (Mr) 1876 - October 15, 1966
- Montague, Keith (Mr) April 1, 1943 -
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- Mooney, John (Mr) 1874 - April 12, 1934
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- Moonman, Eric (Mr) April 29, 1929 -
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- Moore, Henry (Lord) March 15, 1784 - August 1, 1825
- Moore, Henry (Mr) January 14, 1937 -
- Moore, Henry (Mr) - November 22, 1957
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- Moore, Michael (Mr) June 3, 1965 -
- Moore, Newton (Major-General Hon. Sir) 1870 - October 28, 1936
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- Moore, Philip (Mr) April 6, 1921 -
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- Moore, Stephen (Mr) 1836 - 1897
- Moore, Thomas (Lieut-Colonel Sir) 1887 - April 9, 1971
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- Moore-Brabazon, Derek (Mr) December 24, 1910 - December 11, 1974
- Moore-Brabazon, Ivon (Mr) December 20, 1946 -
- Moore-Brabazon, John (Lieut-Colonel) 1884 - May 17, 1964
- Moore-Stevens, John (Mr) 1818 - 1903
- Moorsom, James (Mr) 1837 - March 26, 1918
- Moorsom, Robert (Sir) June 1, 1760 - May 14, 1835
- Moran, Margaret (Ms) April 24, 1955 -
- Mordaunt, Charles (Sir) 1836 - 1897
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- Morden, Jessica (Ms) May 29, 1968 -
- Morden, Walter (Lieut-Colonel) 1880 - June 25, 1932
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- More, Robert (Mr) 1836 - November 25, 1903
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- Moreton, (Lord) 1857 - February 28, 1920
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- Moreton, Henry (Hon.) 1802 - 1853
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- Morgan, Charles (Mr) April 10, 1792 - April 16, 1875
- Morgan, Charles (Mr) 1828 - 1854
- Morgan, Charles (Mr) 1803 - 1888
- Morgan, Charles (Sir) 1792 - 1854
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- Morgan, David (Lieut-Colonel) 1867 - February 23, 1933
- Morgan, David (Mr) 1844 - February 28, 1918
- Morgan, Delyth (Ms) August 30, 1961 -
- Morgan, Elystan (Mr) December 7, 1932 -
- Morgan, Frederick (Hon.) 1834 - January 8, 1909
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- Murray, Andrew (Mr) 1849 - August 21, 1942
- Murray, Arthur (Lieut-Colonel Hon.) 1879 - 1962
- Murray, Charles (Hon.) 1877 - March 12, 1951
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- Murray, John (Mr) 1879 - December 28, 1964
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- Murray, Thomas (Sir) 1884 - June 5, 1955
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- Mytton, John (Mr) September 30, 1796 - March 29, 1834
14,855 people in total