Baron Trimlestown, of Trimlestown in
County Meath
County Meath ( ; or simply , ) is a Counties of Ireland, county in the Eastern and Midland Region of Republic of Ireland, Ireland, within the Provinces of Ireland, province of Leinster. It is bordered by County Dublin to the southeast, County ...
, was a title in the
Peerage of Ireland
The peerage of Ireland consists of those Peerage, titles of nobility created by the English monarchs in their capacity as Lordship of Ireland, Lord or Monarchy of Ireland, King of Ireland, or later by monarchs of the United Kingdom of Great B ...
. Following the death of the 21st Baron in January 2024 with no known heir, the title is dormant, and may be extinct.
History
The title was created in 1461 for Sir Robert Barnewall, who was the younger brother of
Nicholas Barnewall,
Chief Justice of the Irish Common Pleas
The chief justice of the Common Pleas for Ireland was the presiding judge of the Court of Common Pleas in Ireland, which was known in its early years as the Court of Common Bench, or simply as "the Bench", or "the Dublin bench". It was one of the ...
, and younger son of Sir
Christopher Bernevall,
Lord Chief Justice of the King's Bench in Ireland. He married Elizabeth le Brun, the heiress of
Roebuck Castle in South Dublin. He was succeeded by his son Christopher, the second Baron. Christopher was implicated in the
Lambert Simnel conspiracy, but received a
royal pardon in 1488. His son John, the third Baron, served as
Lord Chancellor of Ireland from 1534 until his death in 1538. The tenth baron,
Matthias Barnewall, was
attainded in 1691 for supporting the
Jacobite cause, but his brother successfully recovered the title and family estate.
The barony became dormant on the death of the sixteenth Baron, in 1879. In 1891 the peerage was claimed by Christopher Patrick Mary Barnewall (''de jure'' 17th Baron Trimlestown), a descendant of Hon. Patrick Barnewall, second son of the seventh Baron. He died before he had fully established his claim, but in 1893 his younger brother Charles Aloysius Barnewall was confirmed in the title by the Committee for Privileges of the
House of Lords
The House of Lords is the upper house of the Parliament of the United Kingdom. Like the lower house, the House of Commons of the United Kingdom, House of Commons, it meets in the Palace of Westminster in London, England. One of the oldest ext ...
.
the title was held by the grandson of the successful claimant of 1893, the twenty-first Baron, who succeeded his elder brother in 1997. There being no known heir to the barony, on the death of the 21st Baron on 10 January 2024, the title became dormant, and may be extinct, unless a remote heir is found.
Related titles
The
Viscounts Barnewall were members of another branch of the Barnewall family and a third branch were the
Barnewall baronets of Crickstown.
Barons Trimlestown (1461)

*Robert Barnewall, 1st Baron Trimlestown (died 1470)
*Christopher Barnewall, 2nd Baron Trimlestown (died )
*
John Barnewall, 3rd Baron Trimlestown (died 1538)
*Patrick Barnewall, 4th Baron Trimlestown (died 1562 or 1563)
*Robert Barnewall, 5th Baron Trimlestown (died 1573)
*Peter Barnewall, 6th Baron Trimlestown (died 1598)
*Robert Barnewall, 7th Baron Trimlestown (–1639)
*Matthias Barnewall, 8th Baron Trimlestown (1614–1667)
*Robert Barnewall, 9th Baron Trimlestown (died 1689)
*
Matthias Barnewall, 10th Baron Trimlestown (died 1692) (attainted 1691)
*John Barnewall, 11th Baron Trimlestown (1672–1746)
*
Robert Barnewall, 12th Baron Trimlestown
Robert Barnewall, 12th Baron Trimlestown (''c.''1704 – 6 December 1779) was a prominent Anglo-Irish landowner, active in the Roman Catholic cause.
Early life
Robert was the eldest son of John Barnewall, 11th Baron Trimlestown (1672–1746). Ro ...
(died 1779)
*
Thomas Barnewall, 13th Baron Trimlestown (died 1796)
*
Nicholas Barnewall, 14th Baron Trimlestown (1726–1813)
*
John Thomas Barnewall, 15th Baron Trimlestown (1773–1839)
"Lord Trimlestown"
''The Gentleman's Magazine
''The Gentleman's Magazine'' was a monthly magazine founded in London, England, by Edward Cave in January 1731. It ran uninterrupted for almost 200 years, until 1907, ceasing publication altogether in 1922. It was the first to use the term ''m ...
'', Vol. XII (new series), December 1839, p. 648.
* Thomas Barnewall, 16th Baron Trimlestown (1796–1879) (dormant 1879)
*Christopher Patrick Mary Barnewall, ''de jure'' 17th Baron Trimlestown (1846–1891)
*Charles Aloysius Barnewall, 18th Baron Trimlestown (1861–1937) (confirmed in title 1893)
*Charles Aloysius Barnewall, 19th Baron Trimlestown (1899–1990)
*Anthony Edward Barnewall, 20th Baron Trimlestown (1928–1997)
*Raymond Charles Barnewall, 21st Baron Trimlestown (1930–2024)
There is no known heir to the barony.
See also
* Viscount Barnewall
References
{{DEFAULTSORT:Trimlestown
Dormant baronies in the Peerage of Ireland
Barons Trimlestown
Noble titles created in 1461
1460s establishments in Ireland