Barons Trimlestown (1461) Robert Barnewall, 1st Baron Trimlestown (d. 1470) Christopher Barnewall, 2nd Baron Trimlestown (?) John Barnewall, 3rd Baron Trimlestown (d. 1538) Patrick Barnewall, 4th Baron Trimlestown (d. 1562) Robert Barnewall, 5th Baron Trimlestown (d. 1573) Peter Barnewall, 6th Baron Trimlestown (d. 1598) Robert Barnewall, 7th Baron Trimlestown (c. 1574-1639) Matthias Barnewall, 8th Baron Trimlestown (1614-1667) Robert Barnewall, 9th Baron Trimlestown (d. 1689) Matthias Barnewall, 10th Baron Trimlestown (d. 1692) John Barnewall, 11th Baron Trimlestown (1672-1746) Robert Barnewall, 12th Baron Trimlestown (d. 1779) Thomas Barnewall, 13th Baron Trimlestown (d. 1796) Nicholas Barnewall, 14th Baron Trimlestown (1726-1813) John Thomas Barnewall, 15th Baron Trimlestown (1773-1839) Thomas Barnewall, 16th Baron Trimlestown (1796-1879) Christopher Patrick Mary Barnewall, 17th Baron Trimlestown (1846-1891) Charles Aloysius Barnewall, 18th Baron Trimlestown (1861-1937) Charles Aloysius Barnewall, 19th Baron Trimlestown (1899-1990) Anthony Edward Barnewall, 20th Baron Trimlestown (1928-1997) Raymond Charles Barnewall, 21st Baron Trimlestown (b. 1930)
