Kerelaw Castle is said to have been held by the Lockharts from Richard de Morville, Constable of Scotland, as far back as 1191, after Stephen Lockhart or Loccard obtained a grant of land in Ayrshire. The castle and barony were eventually passed on to the Campbells of Loudoun and later to the Cunninghames (or Cunninghams/Cuninghames) of Kilmaurs. It was in the Cunninghame's possession in 1488 that the castle was sacked and burned by the 2nd Lord Montgomerie, during the well documented and long-term feud between these two prominent Ayrshire families.
Kerelaw was rebuilt sometime after 1488 and is reported to have contained a number of carved coats of arms of the Scottish nobility, taken from Kilwinning Abbey, Nine fishermen from Saltcoats were granted leases in 1545 in return for carrying the Earl's furniture to Finlayston on the Clyde every spring from the Creek of Saltcoats and bringing it back again in the autumn when the family returned to Kerelaw for the winter months. A half barrel of herrings was also to be furnished yearly to the Earl.
Kerelaw Castle is now a ruin, with three walls surviving in various states of decay. Gothic windows still adorn the southern wall, believed to have been inspired by those at Kilwinning Abbey.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.