Castlestrange House was built in the early 18th century by the Mitchell family, on the site of an earlier castle constructed by the L’Estrange family. In the 1890s, veterinary surgeon Willie Byrne established his practice here. It was under his employ that Aleen Isabel Cust—the first female veterinary surgeon in Ireland or the UK—began working. Cust lived at Castlestrange for a time in the early 20th century.

Following Byrne’s death in 1910, the property was sold in 1915 to William J. Finerty and remained inhabited until the mid-20th century. Since then, Castlestrange has fallen into ruin, standing abandoned for decades.

Yet the place has not been entirely silent. Witnesses have reported strange, ghostly faces appearing at its windows, especially on the upper floors. The identities of these spectral figures remain unknown, but some believe the house’s position—on land once used as a Celtic ceremonial site—may be the source of its lingering, uncanny presence.