TANFIELD, a chapelry in that part of the parish of CHESTER-le-STREET which is in the middle division of CHESTER ward, county palatine of DURHAM, 6 miles (S. W.) from Gateshead. The population is returned with the townships of Beamish and Lintz-Green. The living is a perpetual curacy, in the archdeaconry and diocese of Durham, endowed with £200 private benefaction, and £200 royal bounty, and in the patronage of Lord Ravensworth. The chapel, dedicated to St. Margaret, was rebuilt by subscription in 1749, with the exception of a portion of the chancel, in the southern wall of which there is a piscina. There are two paper, mills and extensive collieries in the neighbourhood. Tanfield Arch, a magnificent stone structure, one hundred and thirty feet in the span, springing from abutments, njne feet high, to the height of sixty feet, was erected, upon the site of a wooden arch that had recently fallen, by certain coal owners, at the expense of £12,000, to expedite the passage of their wagons. Elizabeth Davison, in 1762, bequeathed £500 towards the support of a free school and for other charitable uses.