Caisleán Ard Aidhin aka Artane Castle was the medieval seat of the Holywood (Hollywood aka Holywode) family.
At the time of the Silken Thomas rebellion of 1534, Thomas St. Lawrence of Artane Castle (aka Baron Howth) gave refuge to those escaping the siege of Dublin Castle.
In 1825, this medieval castle was demolished and replaced by a new Artane Castle aka Artane House.
By 1870, it became the newly-founded St. Joseph's Industrial School for Boys.
References
Hollywood of Artaine | Ireland | VIEW SOURCE |