The original property at Killaha was Killaha Castle, the hereditary seat of the O’Donoghue of the Glens. The family had moved to Killarney by the 19th century. Lewis records that Killaha House was then the seat of J. McCarthy. At the time of Griffith’s Valuation, John McCarthy was leasing the house to Frederick Millbourne, MD, when it was valued at £16 10s. Bary indicates that it was subsequently rented by the Orpen family and later, possibly in the 1890s, given to the Catholic church by R.M. Leeson Marshall who was descended from the O’Donoghues of Killaha. It afterwards served as the presbytery for the local parish.