| Rollo (Lordship) |
Andrew Rollo - Tue 10th Jan 1651
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| Roll of Ipsden (Barony) |
Eric Roll - Tue 19th Jul 1977
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30 March 2005 |
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| Romer (Barony) |
Mark Lemon Romer - Wed 5th Jan 1938
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19 August 1944 |
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| Romilly (Barony) |
John Romilly - Wed 3rd Jan 1866
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29 June 1983 |
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| of Romney (Earldom) |
Henry Sydney - Fri 14th May 1694
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8 April 1704 |
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| of Romney (Earldom) |
Charles Marsham - Mon 22nd Jun 1801
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| Romney (Barony) |
Robert Marsham - Mon 22nd Jun 1716
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| Romsey (Barony) |
Louis Francis Albert Victor Nicholas Mountbatten - Sat 18th Oct 1947
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| of Ronaldshay (Earldom) |
Lawrence Dundas - Mon 22nd Aug 1892
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- |
- |
| Rooker (Barony) |
Jeffrey William Rooker - Sat 16th Jun 2001
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| Rookwood (Barony) |
Henry John Selwyn Ibbetson - Sat 18th Jun 1892
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15 January 1902 |
- |
| Roos (Barony) |
John James Robert Manners - Wed 17th Jun 1896
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| Rootes (Barony) |
William Edward Rootes - Mon 16th Feb 1959
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- |
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| Roper (Barony) |
John Francis Hodgess Roper - Fri 12th May 2000
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29 January 2016 |
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| of Roscommon (Earldom) |
James Dillon - Fri 5th Aug 1622
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- |
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| Rosebery (Barony) |
Archibald John Primrose - Sat 26th Jan 1828
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- |
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| of Rosebery (Earldom) |
Archibald Primrose - Tue 10th Apr 1703
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| of Rosebery (Viscountcy) |
Archibald Primrose - Thu 1st Apr 1700
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| Rosehill and Eglismauldie (Lordship) |
John Carnegie - Fri 1st Nov 1647
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| Rosenfield (Barony) |
Daniel Robert Rosenfield - Thu 13th Jul 2023
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