What is recorded here

Castle noo Gallen vanished beneath a farmhouse and farm sheds on the Gweestion River terrace, leaving no stone visible despite appearing in the 1635-37 Strafford Inquisition and a 1720-21 estate map. The castle may have been buried, broken or simply renamed into domestic life. Its absence is not emptiness; it is a warning that ordinary buildings can sit atop forgotten power.

Located on a rise/terrace overlooking a probably fording point on the Gweestion River which is 40m to S. A weir is indicated on the river here on the 1931 OS 6-inch map. An enclosure (MA071-023----) is nearby. This castle is listed in the 1635-37 Strafford Inquisition of Co. Mayo: '…the castle of Newcastle, alias Castle noo Gallen,..' (O’Sullivan 1958, 128). It is not shown on any edition of the OS 6-inch maps but is marked on an estate map drawn up in 1720-21 where it is shown close to the NE bank of the River Gweestion, roughly where Newcastle House is located on the 1931 OS 6-inch map. There is no visible trace of the castle at ground level. A two-storey farmhouse and adjacent farmyard with cluster of farm sheds stand on the location. Compiled by: Jane O’Shaughnessy Date of upload: 24 September 2021

This remains an important historical record, but the official description says the monument is no longer visible or has been destroyed. The monument record does not grant public access. Check the route and ask the landowner before entering private land.