| Swaythling (Barony) |
Montagu Samuel-Montagu - Thu 18th Jul 1907
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| Swinburne (Barony) |
Jacqueline Kay Swinburne - Tue 20th Jun 2023
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| Swinfen (Barony) |
Charles Swinfen Eady - Sat 1st Nov 1919
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| of Swinton (Earldom) |
Philip Cunliffe-Lister - Thu 5th May 1955
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| Swinton (Viscountcy) |
Philip Cunliffe-Lister - Fri 29th Nov 1935
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| Swire (Barony) |
Hugo George William Swire - Tue 1st Nov 2022
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| Sydenham (Barony) |
Charles Poulett Thomson - Wed 19th Aug 1840
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19 September 1841 |
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| Sydenham of Combe (Barony) |
George Sydenham Clarke - Wed 12th Feb 1913
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7 February 1933 |
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| Sydney (Viscountcy) |
Henry Sydney - Sat 9th Apr 1689
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8 April 1704 |
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| Sydney (Barony) |
Dudley Alexander Sydney Cosby - Thu 14th Jul 1768
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22 January 1774 |
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| Sydney (Viscountcy) |
Thomas Townshend - Thu 11th Jun 1789
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14 February 1890 |
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| Sydney (Barony) |
Thomas Townshend - Thu 6th Mar 1783
|
14 February 1890 |
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| Sydney (Earldom) |
John Robert Townshend - Fri 27th Feb 1874
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14 February 1890 |
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| Sydney (Barony) |
Robert Sidney - Tue 13th May 1603
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| Symons of Vernham Dean (Barony) |
Elizabeth Conway Symons - Mon 7th Oct 1996
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| Sysonby (Barony) |
Frederick Edward Grey Ponsonby - Mon 24th Jun 1935
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23 October 2009 |
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