| Monck (Barony) |
Charles Stanley Monck - Thu 23rd Nov 1797
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- |
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| Monson (Viscountcy) |
William Monson - Wed 23rd Aug 1628
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12 July 1661 |
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| Monteagle (Barony) |
John Browne - Wed 10th Sep 1760
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- |
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| Montgomery (Viscountcy) |
Hugh Montgomery - Tue 3rd May 1622
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7 April 1757 |
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| Moore (Barony) |
John Moore - Tue 22nd Oct 1715
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17 February 1764 |
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| Moore (Barony) |
Gerald Moore - Wed 20th Jul 1616
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- |
- |
| Mornington (Barony) |
Richard Wesley - Sat 9th Jul 1746
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| Mountcashell (Viscountcy) |
Paul Davis - Thu 21st Jan 1706
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30 July 1736 |
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| Mountflorence (Barony) |
John Cole - Mon 8th Sep 1760
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- |
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| Mountgarret (Viscountcy) |
Richard Butler - Thu 23rd Oct 1550
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- |
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| Mountjoy (Viscountcy) |
William Stewart - Fri 19th Mar 1683
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14 August 1769 |
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| Mountjoy (Barony) |
Luke Gardiner - Sat 19th Sep 1789
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25 May 1829 |
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| Mountjoy (Barony) |
Mountjoy Blount - Wed 31st Jan 1618
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- |
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| Mountmorres (Barony) |
Hervey Morres - Tue 4th May 1756
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- |
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| Mountnorris (Barony) |
Francis Annesley - Thu 8th Feb 1629
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- |
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| of Mountrath (Earldom) |
Charles Coote - Mon 6th Sep 1660
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2 March 1802 |
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| Mount Sandford (Barony) |
Henry Moore Sandford - Thu 31st Jul 1800
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25 September 1846 |
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| Mulgrave (Barony) |
Constantine Phipps - Thu 3rd Sep 1767
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- |
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| Muncaster (Barony) |
John Pennington - Tue 21st Oct 1783
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30 March 1917 |
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| Muskerry (Viscountcy) |
Charles MacCarthy - Wed 15th Nov 1628
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11 May 1691 |
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