Markree Castle was built in the early nineteenth century replacing an earlier property, which McParlan indicates was known as Mercury.
McTernan notes that it is the oldest residential site in the county, having been founded by Cornet Cooper in the seventeenth century. At the time of Griffith's Valuation it was owned by Edward J. Cooper and was valued at £90. By the mid twentieth century it had fallen into disrepair but was later acquired by another member of the Cooper family. It now operates as a hotel. See http://www.markreecastle.ie/history.htm for more information. In 2014 it was offered for sale.