| of Leinster (Dukedom) |
James Fitzgerald - Wed 26th Nov 1766
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- |
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| Leitrim (Viscountcy) |
Robert Clements - Tue 3rd Dec 1793
|
9 June 1952 |
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| of Leitrim (Earldom) |
Robert Clements - Wed 30th Sep 1795
|
9 June 1952 |
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| Lifford (Viscountcy) |
James Hewitt - Thu 4th Jan 1781
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- |
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| Ligonier (Earldom) |
Edward Ligonier - Fri 19th Jul 1776
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14 June 1782 |
- |
| of Limerick (Earldom) |
William Dungan - Wed 2nd Jan 1686
|
14 December 1715 |
- |
| of Limerick (Earldom) |
Edmund Henry Pery - Thu 20th Jan 1803
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- |
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| Limerick (Viscountcy) |
Edmund Henry Pery - Mon 29th Dec 1800
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- |
| of Lisburne (Earldom) |
Wilmot Vaughan - Thu 18th Jul 1776
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- |
- |
| Lismore (Viscountcy) |
Cornelius O'Callaghan - Sat 24th May 1806
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29 October 1898 |
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| of Listowel (Earldom) |
William Hare - Tue 5th Feb 1822
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- |
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| Loftus (Viscountcy) |
Nicholas Loftus - Mon 19th Jul 1756
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8 May 1783 |
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| Loftus (Viscountcy) |
Charles Tottenham Loftus - Mon 28th Dec 1789
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- |
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| of Londonderry (Earldom) |
Thomas Ridgeway - Tue 23rd Aug 1622
|
7 March 1714 |
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| of Londonderry (Earldom) |
Thomas Pitt - Tue 8th Oct 1726
|
8 January 1765 |
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| of Londonderry (Marquessate) |
Robert Stewart - Sat 13th Jan 1816
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- |
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| of Londonderry (Earldom) |
Robert Stewart - Mon 8th Aug 1796
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- |
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| Longford (Viscountcy) |
Francis Aungier - Fri 8th Nov 1675
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23 January 1705 |
- |
| of Longford (Earldom) |
Francis Aungier - Sat 18th Dec 1677
|
23 January 1705 |
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| Longueville (Viscountcy) |
Richard Longfield - Fri 2nd Jan 1801
|
23 May 1811 |
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