Peerages

By title: O

All peerages

Navigate via first letter of Title

Title Letters patent Extinct Merged into crown
Oakeshott of Seagrove Bay (Barony) 1 May 2000 - -
Oakley (Barony) 10 September 1831 - -
Oaksey (Barony) 13 January 1947 - -
Oakshott (Barony) 21 August 1964 1 February 1975 -
Oates (Barony) 5 October 2015 - -
O'Brien (Barony) 16 June 1900 7 September 1914 -
O'Brien (Barony) 21 October 1654 - -
O'Brien of Lothbury (Barony) 14 March 1973 24 November 1995 -
O'Cathain (Barony) 21 June 1991 23 April 2021 -
Ockham (Viscountcy) 30 June 1838 - -
Ockingham (Barony) 6 April 1689 - -
O'Donnell (Barony) 10 January 2012 - -
of Offaly (Earldom) 19 March 1761 - -
Offord of Garvel (Barony) 13 October 2021 - -
of Ogle (Earldom) 16 March 1665 - -
Ogle (Viscountcy) 23 December 1645 - -
Ogmore (Barony) 10 July 1950 - -
O'Grady (Barony) 6 January 1831 - -
O'Hagan (Barony) 14 June 1870 - -
Oliver of Aylmerton (Barony) 31 January 1986 17 October 2007 -