HAYDOCK, a township, in the parish of St. Thomas in Ashton-in-Makerfield, union of Warrington, hundred of West Derby, S. division of Lancashire, 7 miles (N. by W.) from Warrington; containing 1296 inhabitants. The manor was held jointly by the families of Holland and Haydock, so long as the former had any estates in Lancashire. In the reign of Edward III., Gilbert de Eydock, or Haidoc, had a licence for imparking Haydock; and from this feudal proprietor descended Sir Gilbert de Haydock, whose daughter and heiress married Sir Peter Legh, of Lyme, ancestor of Thomas Legh, Esq., of Lyme Hall, Cheshire, the present lord of the manor and owner of the whole property. The township comprises 2362 acres, whereof 426 are arable, 1689 meadow and pasture, 200 wood, and 47 acres roads and waste; three-fourths of the soil are clay, and onefourth loam. Here is a very extensive colliery, one of the largest in the county: the whole of the strata wrought in the St. Helen's coal-field, as it is designated, extend under this township, to the number of seventeen workable strata; the colliery has been in operation for a long period, and a sufficient quantity of coal yet remains to supply a very large demand for centuries. There is a patent-rope manufactory. The Newton station on the Liverpool and Manchester railway is three miles distant. Haydock Lodge, built by the late Col. Legh, at a cost of £70,000, is a handsome stone structure, seated in the midst of an extensive and picturesque park. It is now converted into a licensed lunatic asylum, for which its healthy situation, spacious grounds, and facilities of railway communication, render it peculiarly well adapted: it contains about 450 patients, and has a chaplain, a visiting physician, and a resident surgeon. The tithes of the township have been commuted for £141. A school is endowed with £7 per annum.See Ashton.