| of Londonderry (Earldom) |
Robert Stewart - Mon 8th Aug 1796
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- |
- |
| of Londonderry (Marquessate) |
Robert Stewart - Sat 13th Jan 1816
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- |
- |
| Long (Viscountcy) |
Walter Hume Long - Sat 4th Jun 1921
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- |
- |
| Longford (Barony) |
Thomas Pakenham - Fri 7th May 1756
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- |
- |
| Longford (Barony) |
Jacob Bouverie - Thu 29th Jun 1747
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- |
- |
| Longford (Viscountcy) |
Francis Aungier - Fri 8th Nov 1675
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- |
- |
| of Longford (Earldom) |
Francis Aungier - Sat 18th Dec 1677
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- |
- |
| of Longford (Earldom) |
Elizabeth Pakenham - Mon 20th Jun 1785
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- |
- |
| Longueville (Viscountcy) |
Henry Yelverton - Fri 21st Apr 1690
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22 April 1799 |
- |
| Longueville (Barony) |
Richard Longfield - Thu 1st Oct 1795
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- |
- |
| Longueville (Viscountcy) |
Richard Longfield - Fri 2nd Jan 1801
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- |
- |
| Lonsdale (Viscountcy) |
John Lowther - Mon 28th May 1696
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7 March 1751 |
- |
| Lonsdale (Viscountcy) |
James Lowther - Mon 24th May 1784
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24 May 1802 |
- |
| of Lonsdale (Earldom) |
James Lowther - Mon 24th May 1784
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24 May 1802 |
- |
| of Lonsdale (Earldom) |
William Lowther - Tue 7th Apr 1807
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- |
- |
| Loomba (Barony) |
Rajinder Paul Loomba - Wed 12th Jan 2011
|
- |
- |
| Loreburn (Earldom) |
Robert Threshie Reid - Tue 4th Jul 1911
|
30 November 1923 |
- |
| Loreburn (Barony) |
Robert Threshie Reid - Mon 8th Jan 1906
|
30 November 1923 |
- |
| Lorton (Viscountcy) |
Robert Edward King - Wed 28th May 1806
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- |
- |
| of Lothian (Marquessate) |
Robert Kerr - Thu 23rd Jun 1701
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