The modern church of St Luke is built on the site of an early medieval keeill known as Keeill Abban.  The present St Luke's Chapel was built in 1836. In 1770, Dr Kelly referred to the ruins of the keeill and the Rev. W. Gill added its dimensions, about 15.5 metres by 3.6 metres. No other details of the keeill building are known, although a cross rudely cut into a rough slab of granite taken from Keeill Abban has been built into the gable of the present St Luke's Chapel.