| Mott (Barony) |
Darren James Mott - Mon 19th Jun 2023
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| Mottistone (Barony) |
John Edward Bernard Seely - Wed 21st Jun 1933
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| Moulton (Barony) |
John Fletcher Moulton - Tue 1st Oct 1912
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9 March 1921 |
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| of Mount Alexander (Earldom) |
Hugh Montgomery - Mon 18th Jul 1661
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| Mountbatten of Burma (Earldom) |
Louis Francis Albert Victor Nicholas Mountbatten - Sat 18th Oct 1947
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| Mountbatten of Burma (Viscountcy) |
Louis Francis Albert Victor Nicholas Mountbatten - Fri 23rd Aug 1946
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| Mountcashell (Viscountcy) |
Stephen Moore - Wed 22nd Jan 1766
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| Mountcashell (Viscountcy) |
Paul Davis - Thu 21st Jan 1706
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| Mountcashell (Earldom) |
Stephen Moore - Fri 5th Jan 1781
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| Mountcastle (Barony) |
James Hamilton - Fri 2nd Dec 1701
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| Mount Charles (Viscountcy) |
Henry Conyngham - Tue 21st Nov 1797
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| of Mount Charles (Earldom) |
Henry Conyngham - Mon 15th Jan 1816
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| Mount Earl (Viscountcy) |
Valentine Richard Quin - Sat 3rd Feb 1816
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25 March 2011 |
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| of Mount Edgcumbe (Earldom) |
George Edgcumbe - Mon 31st Aug 1789
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| Mount Edgcumbe and Valletort (Viscountcy) |
George Edgcumbe - Mon 5th Mar 1781
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| Mountevans (Barony) |
Edward Ratcliffe Garth Russell Evans - Mon 12th Nov 1945
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| Mountflorence (Barony) |
John Cole - Mon 8th Sep 1760
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| Mountgarret (Viscountcy) |
Richard Butler - Thu 23rd Oct 1550
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| Mountgarret (Barony) |
Henry Edmund Butler - Tue 20th Jun 1911
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| Mountjoy (Barony) |
Thomas Windsor - Fri 1st Jan 1712
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25 January 1758 |
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