LLANVAIR-NANTGWN (LLAN-FAIRY-NANT-GWN), a parish, in the union of CARMARTHEN, hundred of KEMMES, county of PEMBROKE, SOUTH WALES, 7 miles (S. by E.) from Cardigan; containing 241 inhabitants. This parish, which is pleasantly situated in the north-eastern part of the county, derives its name from the dedication of its church to St. Mary, and its distinguishing adjunct, probably from the abundance of white quartz stones scattered over the lands and in the bed of a brook by which it is watered. It comprehends a tract of about one thousand four hundred acres of rather flat but dry land, the whole inclosed, and in a good state of cultivation; the soil, though light, is in general fertile, and the inhabitants are chiefly employed in agriculture: the surrounding scenery is not distinguished by any peculiarity of feature, but from the higher grounds are some good prospects over the adjacent country: the rateable annual value of the parish is returned at £605. The living is a perpetual curacy, endowed with £800 royal bounty; net income XSO; patron and impropriator, 3 homes Bowen, Esq., whose tithes have been commuted for a rent-charge of £105. The church, dedicated to St, Mary, is not distinguished by any architectural details of importance. There is a place of worship for Baptists. John Jones, in 1729, bequeathed a rent-charge of twenty shillings to the poor, and a similar awn, to. the officiating minister for preaching four sermons_ annually; but, this charity is at present sus.. pended.