Letters Patent
Navigate by the first letter of the Peerage title
By title: O
| Kingdom | Reign | Issued on | Peerage types | Peerages | Issued to |
|---|---|---|---|---|---|
| United Kingdom | Elizabeth II | Thu 9th Feb 1989 | Life peerage: Life Peerages Act 1958 | Oppenheim-Barnes | OPPENHEIM-BARNES Sally |
| United Kingdom | Elizabeth II | Thu 22nd Jan 1976 | Life peerage: Life Peerages Act 1958 | Oram | ORAM Albert Edward |
| Kingdom of Ireland | William IV | Wed 4th May 1836 | Peerage of Ireland | Oranmore and Browne | BROWNE Dominick |
| United Kingdom | George III | Thu 10th Apr 1806 | Promotion | Orford | WALPOLE Horatio |
| Kingdom of Great Britain | George II | Tue 6th Feb 1742 | Hereditary peerage | Orford | WALPOLE Robert |
| Kingdom of England | William III | Tue 7th May 1697 | Hereditary peerage | Orford | RUSSELL Edward |
| Kingdom of Ireland | George III | Sat 5th Jun 1790 | Peerage of Ireland | Oriel | FOSTER Margaretta Amelia |
| United Kingdom | George IV | Tue 17th Jul 1821 | Hereditary peerage | Oriel | FOSTER John |
| Kingdom of Scotland | William III | Tue 3rd Jan 1696 | Hereditary peerage | Orkney | HAMILTON George |
| United Kingdom | Victoria | Thu 16th Apr 1868 | Hereditary peerage | Ormathwaite | WALSH John Benn |
| United Kingdom | Elizabeth II | Tue 21st Oct 1997 | Life peerage: Life Peerages Act 1958 | Orme | ORME Stanley |
| United Kingdom | William IV | Mon 12th Sep 1831 | Promotion | Ormelie | CAMPBELL John |
| United Kingdom | Victoria | Sat 11th Jul 1885 | Promotion | Ormelie | CAMPBELL Gavin |
| Kingdom of England | Charles II | Mon 9th Nov 1682 | Promotion | Ormond | BUTLER James |
| Kingdom of Ireland | George III | Fri 12th Jan 1816 | Promotion in the peerage of Ireland | Ormond | BUTLER Walter |
| Kingdom of Ireland | Charles I | Sat 30th Aug 1642 | Promotion in the peerage of Ireland | Ormond | BUTLER James |
| Kingdom of Ireland | Charles II | Wed 30th Mar 1661 | Promotion in the peerage of Ireland | Ormond | BUTLER James |
| Kingdom of Ireland | George IV | Wed 5th Oct 1825 | Promotion in the peerage of Ireland | Ormond | BUTLER James Wandesford |
| United Kingdom | George IV | Tue 17th Jul 1821 | Hereditary peerage (already peer of Ireland) | Ormonde | BUTLER James Wandesford |
| Kingdom of Ireland | Charles II | Sun 5th Sep 1660 | Promotion in the peerage of Ireland | Orrery | BOYLE Roger |