| Naas (Barony) |
John Bourke - Thu 1st Aug 1776
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- |
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| Navan (Barony) |
Roger Jones - Fri 25th Aug 1628
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- |
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| Netterville (Viscountcy) |
Nicholas Netterville - Sun 3rd Apr 1622
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| Newborough (Barony) |
George Cholmondeley - Fri 12th Apr 1715
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| Newborough (Barony) |
Thomas Wynn - Tue 23rd Jul 1776
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| Newcomen (Viscountcy) |
Charlotte Gleadowe-Newcomen - Fri 11th Feb 1803
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15 January 1825 |
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| Newcomen (Barony) |
Charlotte Gleadowe-Newcomen - Thu 31st Jul 1800
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15 January 1825 |
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| Newhaven (Barony) |
William Mayne - Fri 26th Jul 1776
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28 May 1794 |
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| Newport (Barony) |
Robert Jocelyn - Fri 29th Nov 1743
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| Newry and Morne (Viscountcy) |
Francis Needham - Tue 5th Feb 1822
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| Newtown (Barony) |
Richard Child - Sun 24th Apr 1718
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17 September 1784 |
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| Newtown Butler (Barony) |
Theophilus Butler - Mon 21st Oct 1715
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21 December 1998 |
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| Norbury (Barony) |
John Toler - Mon 22nd Dec 1800
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- |
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| of Norbury (Earldom) |
John Toler - Sat 23rd Jun 1827
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- |
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| of Normanton (Earldom) |
Charles Agar - Tue 4th Feb 1806
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- |
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| Northland (Viscountcy) |
Thomas Knox - Mon 4th Jul 1791
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- |
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| Norwood (Barony) |
Grace Toler - Fri 24th Nov 1797
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| Nugent (Barony) |
Robert Nugent - Mon 19th Jan 1767
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14 October 1788 |
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| Nugent (Barony) |
Mary Elizabeth Nugent-Temple-Grenville - Fri 26th Dec 1800
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26 November 1850 |
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| Nugent (Earldom) |
Robert Nugent - Sun 21st Jul 1776
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26 March 1889 |
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