Lismore Castle was an important O’Madden castle. The castle was a four story tower house. It is unknown as to when the actual castle was built but it is believed it may date back to the late 16th century.
Fergus Madden was the last of the Maddens to reside at Lismore castle. He was married to Catherine Madden (alias Donnellan). After Fergus’ death from falling from a horse, his widow, Catherine, later remarried to Richard Burke and claimed Lismore Castle as her dowry.
In 1778 the castle had passed hands to the Daly family who resided in the castle. Records show that by the 1890’s the castle was described as ‘in ruins’. Some architectural features of the castle are still visible today.