A Topographical Dictionary of England (1848) edited by Samuel Lewis:
Slaithwaite Hall, an ancient mansion, situated on a hill which has indications of having been a fortified station, is now divided into cottages: the old manor-house near the chapel is still used for holding the courts leet of the manor of Slaithwaite cum Lingarths, of which the Earl of Dartmouth is lord.
The History of Huddersfield and the Valleys of the Colne, the Holme and the Dearne (1906) by D.F.E. Sykes, chapter II:
In the None Book of Edward I., 1298, we have the entry : "Slaithwaite, John Tyeis, Peter de Wildborelaye" ; and in the Parliamentary writs for 1326, in the reign of Edward II., are named John Tyas, Slaighewaite, Richard Tyas, Farnley, from which we may assume that in the time of the Tyases, as in that of the succeeding Kayes, the estates at Slaithwaite and those at Farnley, including Woodsome, were in the same family. It is more than probable that the seat of this John Tyas, of Slaighewaite, was at Slaithwaite Hall, assuredly the most ancient structure in the Valley of the Colne. If the reader desires to gather a lesson as to the progress made in the art of living, let him contrast Slaithwaite Hall, as he may reconstruct it in his mind's eye, from what still remains of that venerable edifice, and any one of the more considerable of the mansions of our merchant princes in Edgerton, remembering that Slaithwaite Hall was once the abode of a knightly family.