CHILMARK, a parish in the hundred of DUNWORTH, county of WILTS, 4 miles (E.) from Hindon, containing, with the tything of Ridge, 524 inhabitants. The living is a rectory, in the archdeaconry and diocese of Salisbury, rated in the king's books at £19. 13.4., and in the patronage of theEarlof Pembroke. The church, dedicated to St. Margaret, is cruciform, having a tower with a handsome spire rising from the intersection; some parts of the building are in the early style of English architecture, others of later date. The ancient Iknield way proceeds through this parish, which is also intersected by the river Nadder and several streams tributary to it, and by the Wilts and Berks canal. Its celebrated quarries of freestone, whence the materials were drawn for the erection of Salisbury cathedral, have almost fallen into disuse, the stone having been. superseded by Bath-stone, which is wrought- at less expense. A great fair for live stock is held on the 30th of July. This is the birthplace of John de Chilmarke, a celebrated mathematician and philosophical, writer in the thirteenth century.