| Manners (Barony) |
Thomas Manners Sutton - Mon 20th Apr 1807
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| Manningham-Buller (Barony) |
Elizabeth Lydia Manningham-Buller - Mon 2nd Jun 2008
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| Mansell (Barony) |
Thomas Mansell - Fri 1st Jan 1712
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| Mansfield (Viscountcy) |
William Cavendish - Tue 3rd Nov 1620
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26 July 1691 |
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| Mansfield (Barony) |
William Murray - Mon 8th Nov 1756
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20 March 1793 |
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| of Mansfield (Earldom) |
William Murray - Thu 31st Oct 1776
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| of Mansfield (Earldom) |
William Murray - Wed 1st Aug 1792
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| Manton (Barony) |
Joseph Watson - Wed 25th Jan 1922
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| Manvers (Earldom) |
Charles Pierrepont - Wed 9th Apr 1806
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13 February 1955 |
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| Manzoor (Barony) |
Zahida Parveen Manzoor - Fri 6th Sep 2013
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| Maples (Barony) |
John Cradock Maples - Thu 24th Jun 2010
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9 June 2012 |
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| of Mar (Earldom) |
Alexander Stewart - Tue 9th Dec 1404
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| of Mar (Earldom) |
John Erskine - Sat 23rd Jun 1565
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| of March (Marquessate) |
John Maitland - Thu 26th May 1672
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24 August 1682 |
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| of March (Earldom) |
William Douglas - Sat 20th Apr 1697
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| of March (Earldom) |
Charles Lennox - Fri 9th Aug 1675
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| of March (Earldom) |
Esmé Stuart - Mon 17th Jun 1619
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| Marchamley (Barony) |
George Whiteley - Fri 3rd Jul 1908
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| Marchwood (Viscountcy) |
Frederick George Penny - Thu 13th Sep 1945
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| Marchwood (Barony) |
Frederick George Penny - Tue 8th Jun 1937
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