Reputedly built circa 1815 for Henry Longfield, fifth son of John Longfield of Longueville, following his marriage to Mary Powell, heiress of Sea Court, county Cork. At the time of Griffith's Valuation it was held by Henry Longfield in fee and valued at £37. Henry's son John Powell Longfield sold Waterloo to his first cousin Richard Longfield of Longueville who left it to his third son Augustus Henry Longfield. Augustus H. Longfield extended the building. The house was sold to Mr E. W. Hope-Johnstone in 1946. It is still a fine residence.