The 1st and 2nd editions of the historic 25-inch O. S. maps, published in 1889 and 1906 respectively, both depict and name Felin Mynachdy as a working corn mill. The mill stood on the north bank of the Afon Cothi, but took water from the Afon Cloidach via short leat to a pond north of the mill. The building appears to have been demolished, although the mill house survives.
W J Crompton, RCAHMW, 18th January 2019.