Complex, multiphase building dating in parts to c1300 (Ryder, 1980, 453 from which the following information has been extracted). A priory was first mentioned in Ecclesfield in 1273 by a document confirming the possessions of St Wandrille from Pope Gregory X. Of the present buildings, the chapel (at the eastern end of the building) dates to this period (c1300). The building features original windows, piscina, buttresses, undercroft, stairway and doorway. At right angles to the chapel is a medieval north south range, conjectured by Gatty (1887, 12) to have originally formed a two storey refectory / dormitory block. This block appears to have been heavily remodelled in the 17th century with new windows and interior reordering (Ryder 1980, 454). To the west is a 1736 range representing the conversion of the building to a large country residence. The present character of the complex dates ostensibly to this date. The whole of the building was substantially 'reconstructed' by Hadfield in 1887 (Gatty 1887, 12). Significant legibility of medieval monastic buildings.