Peerages for the United Kingdom

By title: O

All peerages for United Kingdom

Navigate via first letter of Title

Title Letters patent Extinct Merged into crown
Oakeshott of Seagrove Bay (Barony) Matthew Alan Oakeshott - Mon 1st May 2000 - -
Oakley (Barony) George Cadogan - Sat 10th Sep 1831 - -
Oaksey (Barony) Geoffrey Lawrence - Mon 13th Jan 1947 - -
Oakshott (Barony) Hendrie Dudley Oakshott - Fri 21st Aug 1964 1 February 1975 -
Oates (Barony) Jonathan Oates - Mon 5th Oct 2015 - -
O'Brien (Barony) Peter O'Brien - Sat 16th Jun 1900 7 September 1914 -
O'Brien of Lothbury (Barony) Leslie Kenneth O'Brien - Wed 14th Mar 1973 24 November 1995 -
O'Cathain (Barony) Detta O'Cathain - Fri 21st Jun 1991 23 April 2021 -
Ockham (Viscountcy) William King - Sat 30th Jun 1838 31 January 2018 -
O'Donnell (Barony) Augustine Thomas O'Donnell - Tue 10th Jan 2012 - -
Offord of Garvel (Barony) Malcolm Ian Offord - Wed 13th Oct 2021 - -
Ogmore (Barony) David Rees Rees-Williams - Mon 10th Jul 1950 - -
O'Grady of Upper Holloway (Barony) Frances Lorraine Maria O'Grady - Fri 9th Dec 2022 - -
O'Hagan (Barony) Thomas O'Hagan - Tue 14th Jun 1870 - -
Oliver of Aylmerton (Barony) Peter Raymond Oliver - Fri 31st Jan 1986 17 October 2007 -
Olivier (Barony) Sydney Haldane Olivier - Sat 9th Feb 1924 15 February 1943 -
Olivier (Barony) Laurence Kerr Olivier - Fri 5th Mar 1971 11 July 1989 -
O'Loan (Barony) Nuala Patricia O'Loan - Fri 11th Sep 2009 - -
O'Neill (Barony) William O'Neill - Sat 18th Apr 1868 - -
O'Neill of Bengarve (Barony) Onora Sylvia O'Neill - Thu 25th Feb 1999 - -