Llandevaud Mill was already disused by 1883, the date of the 1st edition of the 25-inch O. S. map. It is similarly depicted on the 2nd edition map of 1901, and named on the 3rd edition map of 1920. It took water from a small stream via a short leat and elongated mill pond, the two totalling 170 metres in length.
W J Crompton, RCAHMW, 5 May 2011.