On the other side of the Military Road to Hell Fire Wood and the Stewards House is the remains of Killakee Estate (), now known as Lord Massy's Estate. These lands were first granted to Walter de Ridleford after the Norman invasion and later given to Sir Thomas Luttrell, an ancestor of Hell Fire Club member Simon Luttrell, by Henry VIII. The Luttrell family held onto the estate until the seventeenth century when it was relinquished to Dudley Loftus and then passed to William Conolly. In 1800, the Conolly family sold the estate to Luke White.