Dromore Castle is a manor house in Templenoe, County Kerry, Ireland, looking out over the Kenmare River. It was built in the 1830s for the Mahony family to a neo-gothic design by Sir Thomas Deane.
Dromore Castle was designed and built for Denis Mahony by the architect Thomas Deane, probably assisted by his brother Kearns Deane. Work began in 1831, although the account books show that only a negligible amount had been carried out before May 1834. Building work was completed in 1839.
The house is in the castellated Gothic Revival style, with an external finish of Roman Cement with limestone dressings. With the notable exception of the grand south facing window with its pointed arch, the windows consist of pointed tracery contained within rectangular frames, a style characteristic of Deane's domestic work. The entrance hall, which is in the form of a long gallery, takes up half of the area of the ground floor. The west wing of the Castle takes the form of a round tower, with a spiral staircase contained within an attached turret.
Although Dromore Castle appears to have been built on the instructions of Denis Mahony, his father John Mahony had made the decision to build a large home earlier in the 19th century, but apparently abandoned the attempt after his yacht, returning from London with lead for the roof and wine for the cellar, sank in the Kenmare River, in view of the site of the house. After this, no further work took place until Deane began building work for Denis Mahony in the 1830s
Denis Mahony was a minister of the Church of Ireland and a keen proselytiser. He is known to have set up a soup kitchen at Dromore during the time of the Irish Potato Famine, and preached in the chapel at Dromore to the hungry who came for food. His proselytizing activities did not make him a popular figure in the locality, and in 1850 he was attacked in his church at Templenoe. On returning to Dromore, he found a further angry group had uprooted flower beds, felled trees and were about to set fire to the castle; it is claimed that they were only stopped by the intervention of the local Catholic priest, Fr John O'Sullivan.