 Andrew Armstrong's 1775 publication 'A new map of Ayrshire,' shows Fergushill House located on the north side of Lugton Water, around east of the old horse tramway and road bridges, or 'Elbo and Chael' as they were known locally.Fergushill was at its most prosperous around 1560; In 1799, the 12th Earl of Eglinton acquired the house, estate and coal pits, which were joined to Eglinton as a 'pendicle,' a Scots legal term for a subsidiary part of a larger estate.Robin Cummell or Campbell, who worked at Eglinton Castle, states that the Fergushill miners were sold with the land, normal practice for the time.