Baron O'Neill, of Shanes Castle in the County of Antrim, is a title in the Peerage of the United Kingdom. It was created in 1868 for Reverend William O'Neill. Born William Chichester, he succeeded to the estates of his cousin William O'Neill, 3rd Viscount O'Neill (on whose death the Viscountcy and Barony of O'Neill became extinct) in 1855 and assumed by Royal license the surname of O'Neill in lieu of Chichester. Lord O'Neill was the great-great-great-grandson of John Chichester, younger brother of Arthur Chichester, 2nd Earl of Donegall. The latter two were both nephews of Arthur Chichester, 1st Earl of Donegall and grandsons of Edward Chichester, 1st Viscount Chichester. As a descendant of the first Viscount Chichester the present Baron O'Neill is in remainder to the Barony and Viscountcy of Chichester and, according to a special patent in the letters patent, the Earldom of Donegall, titles held by his kinsman the Marquess of Donegall. The Peerage of the United Kingdom comprises most peerages created in the United Kingdom of Great Britain and Ireland after the Act of Union in 1801. ... 1868 (MDCCCLXVIII) was a leap year starting on Wednesday (see link for calendar) of the Gregorian calendar or a leap year starting on Friday of the 12-day-slower Julian calendar. ... 1855 was a common year starting on Monday (see link for calendar). ... Arthur Chichester, 2nd Earl of Donegall (died October 26, 1678) was the son of Lieutenant Colonel John Chichester, of Dungannon, County Tyrone, the latter being the younger brother of Arthur Chichester, 1st Earl of Donegall. ... Arthur Chichester, 1st Earl of Donegall (June 16, 1606) - (March 18, 1675) was an Irish nobleman and soldier. ... Edward Chichester, 1st Viscount Chichester (1568) - (July 8, 1648) was the younger brother of Arthur Chichester, 1st Baron Chichester. ... Marquess of Donegall is a title in the Peerage of Ireland, created in 1791 for the Earl of Donegall. ...

Two other members of the O'Neill family have been elevated to the peerage. Robert William Hugh O'Neill, 1st Baron Rathcavan was the youngest son of the second Baron O'Neill, while Terence O'Neill, Baron O'Neill of the Maine, Prime Minister of Northern Ireland, was the youngest brother of the third Baron. Rt Hon. ... The Right Honourable Terence Marne ONeill, Baron ONeill of the Maine (10 September 1914–12 June 1990) was the fourth Prime Minister of Northern Ireland. ...

Barons O'Neill (1868)

• William O'Neill, 1st Baron O'Neill (1813-1883)
• Edward O'Neill, 2nd Baron O'Neill (1839-1928)
• Shane Edward Robert O'Neill, 3rd Baron O'Neill (1907-1944)
• Raymond Arthur Clanaboy O'Neill, 4th Baron O'Neill (b. 1933)

1868 (MDCCCLXVIII) was a leap year starting on Wednesday (see link for calendar) of the Gregorian calendar or a leap year starting on Friday of the 12-day-slower Julian calendar. ... 1813 is a common year starting on Friday (link will take you to calendar). ... 1883 was a common year starting on Monday (see link for calendar). ... 1839 was a common year starting on Tuesday (see link for calendar). ... 1928 (MCMXXVIII) was a leap year starting on Sunday (link will take you to calendar). ... 1907 (MCMVII) was a common year starting on Tuesday (see link for calendar) of the Gregorian calendar (or a common year starting on Wednesday of the 13-day-slower Julian calendar). ... 1944 (MCMXLIV) was a leap year starting on Saturday (link will take you to calendar). ... 1933 (MCMXXXIII) was a common year starting on Sunday (link will take you to calendar). ...

See also

• Marquess of Donegall
• Earl O'Neill
• Baron Rathcavan
• Baron O'Neill of the Maine