 The mill was built in around 1760, close to a farm of the same name near the small town of Llanwrtyd in Powys.After being enlarged during the 19th century, when the spinning jack, made by John Davies of Llanbrynmair in about 1830 and thought to be the only one of its age and kind still in use, was installed, along with carding engines purchased from a mill in Yorkshire..The mill eventually closed down in 1947 and was relocated and rebuilt at St Fagans in 1952.