Castle – tower house at Knocklyon, Co. Dublin (DU022-019)

Zone of notification 1.13 ha

A zone of notification is the area around a recorded monument where the council normally refers a planning application to the National Monuments Service, which can ask for an archaeological assessment or conditions before permission is granted. Recorded monuments and planning permission: the guide.

The record DU022-019

SMR number

DU022-019

Class

Castle – tower house

Townland

Knocklyon, Co. Dublin

Named on the OS map

Knocklyon Castle

National record

National Monuments Service record for DU022-019

Located at the foot of the Dublin Mountains off a by road that leads to Castlefield Manor housing estate. Knocklyon Castle was associated with Walter de Ridelesford in the medieval period. In the 16th century the castle was said to be ruinous but was, nevertheless, occupied in the 17th century by Piers Archbold, son of Richard Archbold of Kilmacud (Ball 1905, III, 29). It was subsequently converted into a dwelling house. The tower house rises to three storeys with a slated, hipped roof. The exterior has been pebble-dashed. It has a rectangular ground plan (int. dims. L 8.7m; Wth 5.6m) with angle towers in NE and SW angles that have plain slit opes. There is a spiral stairs in the SW tower. A fireplace has been inserted into the E wall at this level. Two-light windows have been inserted into the main floors. The towerhouse can also be entered through a modern opening in the SW tower. A cone-shaped roof has recently been added to the later (Handcock 1899, 95-6; Healy 1975, 1-19). Compilde by Geraldine Stout Date of upload: 25th April 2012

Buildings of Ireland (NIAH) within 100 m

• 11215018 Knocklyon Castle · Regional rating · 1 m
• 11215012 Prospect House · Regional rating · 52 m