# Baron Rathcavan

Baron Rathcavan, of The Braid in the County of Antrim, is a title in the Peerage of the United Kingdom. It was created on 11 February 1953 for the Unionist politician Sir Hugh O'Neill, 1st Baronet. He had already been created a Baronet, of Cleggan in the County of Antrim, on 17 June 1929 (see O'Neill baronets). O'Neill was the third son of Edward O'Neill, 2nd Baron O'Neill (see the Baron O'Neill for earlier history of the family) and the uncle of the Prime Minister of Northern Ireland Terence O'Neill, Baron O'Neill of the Maine. Lord Rathcavan was also a male-line descendant of Edward Chichester, 1st Viscount Chichester (see the Marquess of Donegall). He was succeeded by his eldest surviving son, the second Baron. He succeeded his father as Unionist Member of Parliament for Antrim in 1952, a seat he held until 1959, and was later a member of the Parliament of Northern Ireland. As of 2014 the titles are held by his son, the third Baron, who succeeded in 1994.
The Honourable Sir Con O'Neill, second son of the first Baron, was a diplomat. His daughter Baroness O'Neill of Bengarve is a philosopher.
The family seat is Cleggan Lodge, near Ballymena, County Antrim.

## Barons Rathcavan (1953)

* (Robert William) Hugh O'Neill, 1st Baron Rathcavan (1883–1982)
* Phelim Robert Hugh O'Neill, 2nd Baron Rathcavan (1909–1994)
* Hugh Detmar Torrens O'Neill, 3rd Baron Rathcavan (born 1939)
The heir apparent and sole heir to the peerage is the present holder's son, the Hon. Francois Hugh Nial O'Neill (born 1984).

### Title succession chart

vteTitle succession chart, Barons Chichester (both creations), Viscounts Chichester, Earls of Donegall, and Marquesses of Donegall. :
| | | | | | | Sir John Chichester died 1569 | Sir John Chichester died 1569 | Sir John Chichester died 1569 | Sir John Chichester died 1569 | Sir John Chichester died 1569 | Sir John Chichester died 1569 |
| Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) |
| Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester (1613) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Baron Chichester Viscount Chichester (both 1625) | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | | | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 |
| 1613 barony extinct | 1613 barony extinct | 1613 barony extinct | | | | | | | | | | | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | Arthur Chichester 1st Baron Chichester 1563–1625 | | | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | Edward Chichester 1st Viscount Chichester 1st Baron Chichester 1568–1648 | | | | | |
| | | | | | | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | Arthur Chichester 1st Baron Chichester 1563–1625 | | | | | | |
| | | | | | | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | Earl of Donegall (1647) | | | | | | | | | | | | | | Arthur Chichester 1st Earl of Donegall 1606–1675 | Arthur Chichester 1st Earl of Donegall 1606–1675 | Arthur Chichester 1st Earl of Donegall 1606–1675 | Arthur Chichester 1st Earl of Donegall 1606–1675 | Arthur Chichester 1st Earl of Donegall 1606–1675 | Arthur Chichester 1st Earl of Donegall 1606–1675 | Lt. Col. John Chichester 1609–1647 | Lt. Col. John Chichester 1609–1647 | Lt. Col. John Chichester 1609–1647 | Lt. Col. John Chichester 1609–1647 | Lt. Col. John Chichester 1609–1647 | Lt. Col. John Chichester 1609–1647 |
| | | | | | | Hon. Williaṃ Chichester died 1660 | Hon. Williaṃ Chichester died 1660 | Hon. Williaṃ Chichester died 1660 | Hon. Williaṃ Chichester died 1660 | Hon. Williaṃ Chichester died 1660 | Hon. Williaṃ Chichester died 1660 | | | | Arthur Chichester 2nd Earl of Donegall died 1678 | Arthur Chichester 2nd Earl of Donegall died 1678 | Arthur Chichester 2nd Earl of Donegall died 1678 | Arthur Chichester 2nd Earl of Donegall died 1678 | Arthur Chichester 2nd Earl of Donegall died 1678 | Arthur Chichester 2nd Earl of Donegall died 1678 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hon. John Chichester | Hon. John Chichester | Hon. John Chichester | Hon. John Chichester | Hon. John Chichester | Hon. John Chichester |
| | | | | | | | | | | | | | | | Arthur Chichester 2nd Earl of Donegall died 1678 | Arthur Chichester 3rd Earl of Donegall 1666–1706 | Arthur Chichester 3rd Earl of Donegall 1666–1706 | Arthur Chichester 3rd Earl of Donegall 1666–1706 | Arthur Chichester 3rd Earl of Donegall 1666–1706 | Arthur Chichester 3rd Earl of Donegall 1666–1706 | Arthur Chichester 3rd Earl of Donegall 1666–1706 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rev. William Chichester | Rev. William Chichester | Rev. William Chichester | Rev. William Chichester | Rev. William Chichester | Rev. William Chichester | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | Arthur Chichester 4th Earl of Donegall 1695–1757 | Arthur Chichester 4th Earl of Donegall 1695–1757 | Arthur Chichester 4th Earl of Donegall 1695–1757 | Arthur Chichester 4th Earl of Donegall 1695–1757 | Arthur Chichester 4th Earl of Donegall 1695–1757 | Arthur Chichester 4th Earl of Donegall 1695–1757 | | | Hon. John Chichester 1700–1746 | Hon. John Chichester 1700–1746 | Hon. John Chichester 1700–1746 | Hon. John Chichester 1700–1746 | Hon. John Chichester 1700–1746 | Hon. John Chichester 1700–1746 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rev. Arthur Chichester | Rev. Arthur Chichester | Rev. Arthur Chichester | Rev. Arthur Chichester | Rev. Arthur Chichester | Rev. Arthur Chichester |
| | | | | | | | | | | | | | | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | Baron Fisherwick (1790, GB) Marquess of Donegall (1791) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Arthur Chichester 1st Marquess of Donegall 5th Earl of Donegall 1739–1799 | Arthur Chichester 1st Marquess of Donegall 5th Earl of Donegall 1739–1799 | Arthur Chichester 1st Marquess of Donegall 5th Earl of Donegall 1739–1799 | Arthur Chichester 1st Marquess of Donegall 5th Earl of Donegall 1739–1799 | Arthur Chichester 1st Marquess of Donegall 5th Earl of Donegall 1739–1799 | Arthur Chichester 1st Marquess of Donegall 5th Earl of Donegall 1739–1799 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rev. William Chichester died 1815 | Rev. William Chichester died 1815 | Rev. William Chichester died 1815 | Rev. William Chichester died 1815 | Rev. William Chichester died 1815 | Rev. William Chichester died 1815 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Chichester baronetcy (1821, UK) | Chichester baronetcy (1821, UK) | Chichester baronetcy (1821, UK) | Chichester baronetcy (1821, UK) | Chichester baronetcy (1821, UK) | Chichester baronetcy (1821, UK) | | | | | | |
| | | | | | | | | | | | | | | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | | | | | | | | | | | | | | | | | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | | | | | | | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | | | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 |
| | | | | | | | | | | | | | | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | George Chichester 2nd Marquess of Donegall 1769–1844 | | | | | | | | | | | | | | | | | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | Hon. Arthur Chichester 1771–1788 | | | | | | | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Lord Spencer Chichester 1775–1819 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | Sir Arthur Chichester 1st Baronet c. 1769 – 1847 | | | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | Rev. Edward Chichester died 1840 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Baronetcy extinct | Baronetcy extinct | Baronetcy extinct | Baronetcy extinct | Baronetcy extinct | Baronetcy extinct | | | | |
| | | | | | | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | | | | | | | | | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) |
| | | | | | | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | Baron Ennishowen and Carrickfergus (1841, UK) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | Baron Templemore (1831, UK) | | | | | | | | | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | Baron O'Neill (1868, UK) | | | | | | | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | | | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | | | | | | | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 |
| | | | | | | Ennishowen and Carrickfergus barony extinct | Ennishowen and Carrickfergus barony extinct | Ennishowen and Carrickfergus barony extinct | Ennishowen and Carrickfergus barony extinct | Ennishowen and Carrickfergus barony extinct | Ennishowen and Carrickfergus barony extinct | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | George Chichester 3rd Marquess of Donegall 1797–1883 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Edward Chichester 4th Marquess of Donegall 1799–1889 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Spencer Chichester 1805–1825 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Arthur Chichester 1808–1840 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord Haṃilton Chichester 1810–1854 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord John Chichester 1811–1873 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | Lord Stephen Chichester 1814–1890 | | | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | Arthur Chichester 1st Baron Templemore 1797–1837 | | | | | | | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 | William O'Neill 1st Baron O'Neill (né Chichester) 1813–1883 |
| George Chichester Viscount Chichester 1826–1827 | George Chichester Viscount Chichester 1826–1827 | George Chichester Viscount Chichester 1826–1827 | George Chichester Viscount Chichester 1826–1827 | George Chichester Viscount Chichester 1826–1827 | George Chichester Viscount Chichester 1826–1827 | Frederick Chichester Earl of Belfast 1827–1853 | Frederick Chichester Earl of Belfast 1827–1853 | Frederick Chichester Earl of Belfast 1827–1853 | Frederick Chichester Earl of Belfast 1827–1853 | Frederick Chichester Earl of Belfast 1827–1853 | Frederick Chichester Earl of Belfast 1827–1853 | | | George Chichester 5th Marquess of Donegall 1822–1904 | George Chichester 5th Marquess of Donegall 1822–1904 | George Chichester 5th Marquess of Donegall 1822–1904 | George Chichester 5th Marquess of Donegall 1822–1904 | George Chichester 5th Marquess of Donegall 1822–1904 | George Chichester 5th Marquess of Donegall 1822–1904 | | | Lord Henry Chichester 1834–1928 | Lord Henry Chichester 1834–1928 | Lord Henry Chichester 1834–1928 | Lord Henry Chichester 1834–1928 | Lord Henry Chichester 1834–1928 | Lord Henry Chichester 1834–1928 | | | | | | | | | Lord Adolphus Chichester 1836–1901 | Lord Adolphus Chichester 1836–1901 | Lord Adolphus Chichester 1836–1901 | Lord Adolphus Chichester 1836–1901 | Lord Adolphus Chichester 1836–1901 | Lord Adolphus Chichester 1836–1901 | | | | | | | Harry Chichester 2nd Baron Templemore 1821–1906 | Harry Chichester 2nd Baron Templemore 1821–1906 | Harry Chichester 2nd Baron Templemore 1821–1906 | Harry Chichester 2nd Baron Templemore 1821–1906 | Harry Chichester 2nd Baron Templemore 1821–1906 | Harry Chichester 2nd Baron Templemore 1821–1906 | | | | | | | | | Edward O'Neill 2nd Baron O'Neill 1839–1928 | Edward O'Neill 2nd Baron O'Neill 1839–1928 | Edward O'Neill 2nd Baron O'Neill 1839–1928 | Edward O'Neill 2nd Baron O'Neill 1839–1928 | Edward O'Neill 2nd Baron O'Neill 1839–1928 | Edward O'Neill 2nd Baron O'Neill 1839–1928 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | O'Neill baronetcy (1929, UK) Baron Rathcavan (1953, UK) | | | | | | | | | | | | | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | | | | | | | | | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 |
| | | | | | | | | | | | | | | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Edward Chichester 6th Marquess of Donegall 1903–1975 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Severne Chichester 1861–1951 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Forester Chichester 1864–1865 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Robert Chichester 1873–1921 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | Augustus Chichester 1878–1902 | | | | | | | | | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | Arthur Chichester 3rd Baron Templemore 1854–1924 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | William O'Neill 1874–1882 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Capt. Hon. Arthur O'Neill 1876–1914 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 | Hugh O'Neill 1st Baron Rathcavan 1st Baronet 1883–1982 |
| | | | | | | | | | | | | | | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | Titles inherited by the 5th Baron Templemore | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Robert Chichester 1902–1920 | Robert Chichester 1902–1920 | Robert Chichester 1902–1920 | Robert Chichester 1902–1920 | Robert Chichester 1902–1920 | Robert Chichester 1902–1920 | | | | | | | | | | | | | | | Arthur Chichester 4th Baron Templemore 1880–1953 | Arthur Chichester 4th Baron Templemore 1880–1953 | Arthur Chichester 4th Baron Templemore 1880–1953 | Arthur Chichester 4th Baron Templemore 1880–1953 | Arthur Chichester 4th Baron Templemore 1880–1953 | Arthur Chichester 4th Baron Templemore 1880–1953 | | | | | | | Shane O'Neill 3rd Baron O'Neill 1907–1944 | Shane O'Neill 3rd Baron O'Neill 1907–1944 | Shane O'Neill 3rd Baron O'Neill 1907–1944 | Shane O'Neill 3rd Baron O'Neill 1907–1944 | Shane O'Neill 3rd Baron O'Neill 1907–1944 | Shane O'Neill 3rd Baron O'Neill 1907–1944 | Phelim O'Neill 2nd Baron Rathcavan 1909–1994 | Phelim O'Neill 2nd Baron Rathcavan 1909–1994 | Phelim O'Neill 2nd Baron Rathcavan 1909–1994 | Phelim O'Neill 2nd Baron Rathcavan 1909–1994 | Phelim O'Neill 2nd Baron Rathcavan 1909–1994 | Phelim O'Neill 2nd Baron Rathcavan 1909–1994 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maj. Hon. Arthur Chichester 1914–1942 | Maj. Hon. Arthur Chichester 1914–1942 | Maj. Hon. Arthur Chichester 1914–1942 | Maj. Hon. Arthur Chichester 1914–1942 | Maj. Hon. Arthur Chichester 1914–1942 | Maj. Hon. Arthur Chichester 1914–1942 | Dermot Chichester 7th Marquess of Donegall 5th Baron Templemore 1916–2007 | Dermot Chichester 7th Marquess of Donegall 5th Baron Templemore 1916–2007 | Dermot Chichester 7th Marquess of Donegall 5th Baron Templemore 1916–2007 | Dermot Chichester 7th Marquess of Donegall 5th Baron Templemore 1916–2007 | Dermot Chichester 7th Marquess of Donegall 5th Baron Templemore 1916–2007 | Dermot Chichester 7th Marquess of Donegall 5th Baron Templemore 1916–2007 | | | | | | | | | Raymond O'Neill 4th Baron O'Neill born 1933 | Raymond O'Neill 4th Baron O'Neill born 1933 | Raymond O'Neill 4th Baron O'Neill born 1933 | Raymond O'Neill 4th Baron O'Neill born 1933 | Raymond O'Neill 4th Baron O'Neill born 1933 | Raymond O'Neill 4th Baron O'Neill born 1933 | Hugh O'Neill 3rd Baron Rathcavan born 1939 | Hugh O'Neill 3rd Baron Rathcavan born 1939 | Hugh O'Neill 3rd Baron Rathcavan born 1939 | Hugh O'Neill 3rd Baron Rathcavan born 1939 | Hugh O'Neill 3rd Baron Rathcavan born 1939 | Hugh O'Neill 3rd Baron Rathcavan born 1939 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patrick Chichester 8th Marquess of Donegall born 1952 | Patrick Chichester 8th Marquess of Donegall born 1952 | Patrick Chichester 8th Marquess of Donegall born 1952 | Patrick Chichester 8th Marquess of Donegall born 1952 | Patrick Chichester 8th Marquess of Donegall born 1952 | Patrick Chichester 8th Marquess of Donegall born 1952 | | | | | | | | | Hon. Shane O'Neill born 1965 | Hon. Shane O'Neill born 1965 | Hon. Shane O'Neill born 1965 | Hon. Shane O'Neill born 1965 | Hon. Shane O'Neill born 1965 | Hon. Shane O'Neill born 1965 | Hon. François O'Neill born 1984 | Hon. François O'Neill born 1984 | Hon. François O'Neill born 1984 | Hon. François O'Neill born 1984 | Hon. François O'Neill born 1984 | Hon. François O'Neill born 1984 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | James Chichester Earl of Belfast born 1990 | James Chichester Earl of Belfast born 1990 | James Chichester Earl of Belfast born 1990 | James Chichester Earl of Belfast born 1990 | James Chichester Earl of Belfast born 1990 | James Chichester Earl of Belfast born 1990 | | | | | | | | | Con O'Neill born 2000 | Con O'Neill born 2000 | Con O'Neill born 2000 | Con O'Neill born 2000 | Con O'Neill born 2000 | Con O'Neill born 2000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

## Arms

Coat of arms of Baron Rathcavan :
* Crest1st an arm embowed in armour the hand grasping a sword all Proper 2nd a stork rising with a snake in its beak all Proper.
* EscutcheonQuarterly 1st & 4th per fess wavy the chief Argent and the base representing the waves of the sea in chief a dexter hand couped at the wrist Gules in base a salmon naiant Proper 2nd & 3rd chequy Or and Gules a chief Vair a mullet for difference.
* SupportersOn either side a heron Proper standing on a billet fesswise wavy Argent charged with a bar wavy Azure.
* MottoInvitum Sequitur Honor; Lamh Dearg Eirin