a municipal and parliamentary borough and fashionable watering-place in Pembrokeshire, South Wales, on the western side of Carmarthen Bay, near the mouth of the Bristol Channel, 244 miles W. of London. Tenbigh (otherwise "Denbygh y pyscod," or "Fishing Denbigh," so called to distinguish it from the other Denbigh in "Gwynedd," or North Wales) is picturesquely seated on a lofty ridge or promontory of limestone, projecting into the sea, by which it is surrounded at high-water on three sides. On the east of the town is a small harbour, formed by a stone pier, which affords anchorage for a few vessels, but with the disadvantage of being dry at low-water. The borough is governed by 4 aldermen and 12 councillors, one of whom is mayor. The principal buildings are the parish church of St Mary, the town-hall and market-place, and the baths and assembly-rooms. The remains of Tenby Castle are interesting, and sufficiently preserved to convey an idea of the character of the fortifications, formerly of great strength and importance. The town-walls are more perfect, and still show marks of the injury inflicted upon them in the civil wars, when Tenby, garrisoned for the king, sustained two sieges, in 1643, and again in 1648. The woollen manufacture, introduced by the Flemings more than 700 years ago, and once very flourishing, has entirely disappeared. A considerable trade in fish is carried on here. Norris, in his Etchings of Tenby, 1812, mentions as a tradition the existence of a fish-bank off the town, called "Will's Mark, on which the greatest abundance and every variety of fish was formerly taken;" adding that "this spot was no longer to be found." The situation of this bank would appear to have been accidentally re-discovered in 1858. Tenby contributes, jointly with Pembroke, Wiston, and Milford, to send 1 member to Parliament. A market is held on Wednesday and Saturday. There is a small island immediately off the town, on which was formerly a chapel dedicated to St Catherine. The island of Caldy, of more importance, and on which are a lighthouse and the remains of a monastic establishment, is distant about 2 miles. Pop. (1851) 2982.