Killoughternane Church is a 10th-century Celtic Christian church located 6km from Borris. It was built on the remains of a timber church said to have been built in the 5th century AD by St. Fortiarnán. Also known as the white church, the ruin is small and roofless, measuring approximately 5.5m in length and 3.5m in width. It features a rectangular baptismal font in the northeast corner.
By Andreas F. Borchert, CC BY-SA 4.0, Link