 A chapel to the unknown Saint Ronskan or Ruskin is said to have stood at the foot of the hills to the east of Kilruskin.It has also been suggested that Kilruskin may mean 'The Chapel of the Rushes' in keeping with the very marshy conditions of the low-lying land lying between Kilruskin and Hunterston.In 1895 the antiquarian John Smith recorded that the site had been subject to cultivation for many years but was still a prominent feature that measured at the time 37 paces in diameter at the bottom, circa 14 feet on one side and circa 8 feet on the other.