Templetrine Church is built on the site of an earlier
Roman Catholic church dedicated to Saint Treun, a disciple of
Fin Barre of Cork which dates back to pre-
Reformation times, at least as far back as 1302. A record dating from 1588 shows that Templetrine was a newly reformed Protestant church. On 22 June 1639, an inspection of the church found that its
rectory was intact, and its
chancel was undergoing repairs. In the 1680s the church again underwent major repairs. From 18 October 1692 to 1714,
Edward Synge was rector of the church. He would go on to become the
Archbishop of Tuam. The church alternated between serving as a Protestant and a Catholic church for many years, with the last attempted appointment of a Catholic priest being Fr Thomas Rochfort in 1818. Despite this attempt, John Rogerson Cotter, an Anglican rector, was appointed on 20 June 1818 by Letter Patent of 13 May which stated that "in His Majesty's Disposal, Thomas Rochfort being a papist and therefore incapacitated." The current church building dates from 1821, and was funded by a gift from the
Board of First Fruits. It was built because the church last repaired in the 1680s was prohibitively expensive to repair. They made a gift of
IR£900 for the construction of the church. The further donated £100 and loaned £825 for the construction of the parish's glebe-house. It is unknown who designed the church. A vestry and chancel were added in 1866, as was an apse. == Architecture ==