 Complete the following phrase:  It was one of the three main castles of the ancient OCallaghan clan. The ruin is that of a Jocobean mansion and it is said to have been built by Caher OCallaghan in around 1610. It was built to replace an older fortification, which had probably been in the style of a tower house. It was here that the Papal Nuncio Rinunicci was entertained in 1642. The castle was destroyed in 1652 during the 