Modern watermill. The Ordnance Survey 1:2500 First Edition mapping of 1867-8 depicts two watermills at this location, annotated as 'Nunnery Mill (Corn)'. The institution of a mill here is of great antiquity, associated with the adjoining Nunnery of St Bridget: a mill was doubtless worked at the Nunnery under the ecclesiastical regime to supply the prioress and nuns and to generate revenue, with local tenants compelled to render tribute and services including the milling of grain. Recorded tenants and owners include John Christian (1607) and Robert Calcott, who leased the mill from the seventh Earl of Derby in 1645 for "three lives" (a disputed inheritance dispute followed his death in 1681-82); it later passed through the Heywood, Goldie and Taubman families. The present mill buildings are believed to be two or three centuries old, with traces of an earlier mill site visible beside the stream above the current structure.