Rathlannon castle

Situated on a low N-S spur in deciduous woodland in a low-lying landscape. This is known as Rathlannon Castle, and it was part of Rathlannon townland until some time after the 1839 ed. of the OS 6-inch map was published. References date from the early 17th century, when it was held by the Esmonds of Johnstown (WX042-017----) (Jeffrey 1979, 31-2), and a castle is depicted on the Down Survey map (1655-8) in the NLI (ms 725; microfilm P7384, N6380) at Rathlannon in Kildavin parish. According to the Civil Survey (1654-5) Marcus Esmond owned 121 acres at Rathlannon in 1641 (Simington 1953, 301), and a John Esmond of Rathlannon was listed for transportation with four dependents in 1653 (Hore 1900-11, vol. 6, 502).

This is a rectangular tower (ext. dims. 9m NW-SE; 7.65m NE-SW) surviving complete to the stepped crenellations, but the interior is completely remodelled in brick. The walls have good quoins and a slight base-batter. The doorway, with a pointed arch of undressed stone, is towards the N end of the NE wall and is protected by machicolation at the second floor level and a murder hole in the lobby, both probably operated from a chamber at the second floor, although no barrel-vault survives. The upper three floors were supported on joists set into the NE and SW walls, but this is 18th or 19th century in date. The lobby leads to the ground floor and a mural stairs in the NW wall, now inaccessible. A newel stairs provides access from the second storey to the battlements, but no original internal features survive.