Letters Patent

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All letters patent

Kingdom Reign Issued on Peerage types Peerages Issued to
Kingdom of Ireland William IV Thu 6th Jan 1831 Hereditary peerage subsidiary to another created by the same letters patent O'Grady O'GRADY Standish
United Kingdom Charles III Fri 9th Dec 2022 Life peerage: Life Peerages Act 1958 O'Grady of Upper Holloway O'GRADY Frances Lorraine Maria
United Kingdom Victoria Tue 14th Jun 1870 Hereditary peerage O'Hagan O'HAGAN Thomas
United Kingdom Elizabeth II Fri 31st Jan 1986 Life peerage: Appellate Jurisdiction Act 1876 Oliver of Aylmerton OLIVER Peter Raymond
United Kingdom Elizabeth II Fri 5th Mar 1971 Life peerage: Life Peerages Act 1958 Olivier OLIVIER Laurence Kerr
United Kingdom George V Sat 9th Feb 1924 Hereditary peerage Olivier OLIVIER Sydney Haldane
United Kingdom Elizabeth II Fri 11th Sep 2009 Life peerage: Life Peerages Act 1958 O'Loan O'LOAN Nuala Patricia
United Kingdom Victoria Sat 18th Apr 1868 Hereditary peerage O'Neill O'NEILL William
Kingdom of Ireland George III Thu 28th Aug 1800 Promotion in the peerage of Ireland O'Neill O'NEILL Charles Henry
Kingdom of Ireland George III Fri 25th Oct 1793 Peerage of Ireland O'Neill O'NEILL John
Kingdom of Ireland George III Sat 3rd Oct 1795 Promotion in the peerage of Ireland O'Neill O'NEILL John
United Kingdom Elizabeth II Thu 25th Feb 1999 Life peerage: Life Peerages Act 1958 O'Neill of Bengarve O'NEILL Onora Sylvia
United Kingdom Charles III Mon 7th Nov 2022 Life peerage: Life Peerages Act 1958 O'Neill of Bexley O'NEILL Teresa Ann Jude
United Kingdom Elizabeth II Tue 14th Jun 2005 Life peerage: Life Peerages Act 1958 O'Neill of Clackmannan O'NEILL Martin John
United Kingdom Elizabeth II Thu 28th May 2015 Life peerage: Life Peerages Act 1958 O'Neill of Gatley O'NEILL Terence James
United Kingdom Elizabeth II Fri 23rd Jan 1970 Life peerage: Life Peerages Act 1958 O'Neill of the Maine O'NEILL Terence Marne
Kingdom of Ireland George III Tue 30th Jul 1776 Peerage of Ireland Ongley HENLEY ONGLEY Robert
United Kingdom George III Fri 19th Jun 1801 Promotion Onslow ONSLOW George
Kingdom of Great Britain George I Fri 19th Jun 1716 Hereditary peerage Onslow ONSLOW Richard
United Kingdom Elizabeth II Fri 31st Oct 1997 Life peerage: Life Peerages Act 1958 Onslow of Woking ONSLOW Cranley Gordon Douglas