Dedicated to Ma Rooney (St Runius), the church was built in around 1200, but was altered in 1754.

[1] Evident remains of the original smaller building can be seen in the eastern half of the church today.

[4] Another feature was the western gallery for musicians, including violins and flutes, which would have stood over the modern doorway.

[3] At this time Old St Runius was used as a mortuary chapel; this led to a part of the east end being demolished, and a door constructed.,[5] Although the church continued to be used for special services, it fell into disrepair and it was only after restoration by volunteers that it could be reopened on 9 August 1959.

[6] The church holds a number of early examples of Christian crosses, dating back as far as the 7th century.