[citation needed] After the Reformation, Kilcooley passed into the possession of the Earl of Ormond.
It passed to his daughter Elizabeth, and then through marriage to the Barker baronets of Bocking Hall, the last of whom died in 1818.
The main part of the abbey consists of the entrance chamber, the church, the tower, and the sacristy.
The east end of the nave contains seats for the officiating clergy which have been carved into the crossing piers.
The rooms on the second floor include the dortoir and the main tower — locked up by the Office of Public Works.
[citation needed] Kilcooly Abbey was also used in the making of the film "Excalibur" by John Boorman, which is based on the tale of King Arthur and the knights of the round table.