TREVEGLWYS (TREF-EGLWYS), a parish, in the union of NEWTOWN-AND-LLANIDLOES, upper division of the hundred of LLANIDLOES, county of MONTGOMERY, NORTH WALES, 4 miles (N.) from Llanidloes; containing 1853 inhabitants. This parish is situated in a pleasant vale of the same name, towards the southern part of the county, and is bounded by Llanidloes, Llandinam, Llanwnnog, and Carno, and intersected by the small river Tarannon, which flows into the Severn, near Caer-Sws. It contains by admeasurement 27,000 acres, including a great portion of mountainous land, of which Pfinlimmon forms a part, together with a considerable share of arable and pasture, the latter principally in sheep-walks. In the lower part of the parish the soil is very heavy, and well adapted for wheat and barley; and oak is the prevailing kind of timber: an allotment of the common land took place about ten years since. The surrounding scenery is richly varied, and in some parts beautifully picturesque; and the village, which is small, and surrounded by sheltering hills, is seen with beautiful effect from the road to Llanidloes, at the distance of a mile from which it is situated. The inhabitants are chiefly employed in agriculture, and in the manufacture of flannel. The rateable annual value has been returned at £4,426. The living is a discharged vicarage, rated in the king's books at £5. 8.4.; present net income, £103, with a glebe-house; patron, Lord Mostyn; impropriators, Lord Mostyn, Sir W. W. Wynne, Bart., Dean and Chapter of Bangor, and another. The church, dedicated, according to some authorities, to St. Luke, but as others state, to St. Michael, is an ancient structure, in the early style of English architecture, and contains some remains of carved oak of elegant design ' it is about 60 feet long and 30 broad: in the churchyard are some fine yew-trees of luxuriant growth. There are places of worship for Baptists, and Welsh Calvinistic and Wesleyan 'Methodists. Three day schools afford education to about 100 children at the expense of their parents; from 40 to 50 children are gratuitously instructed in a Sunday school of the Established Church; and 820 males and females are taught in twelve others by various denominations of dissenters. Ursula Evans bequeathed to the poor a rent-charge of £1, the payment of which has been discontinued for some years, from neglect of the parishioners in enforcing it; Mrs. Pugh gave 10, which, with two other minor bequests, was vested in a turnpike bond of £20; Richard Baxter left £100, and Hugh Baxter £50, both which sums have been appropriated to the purchase of a rent-charge out of the land of Maes-y-Gwaelod, producing £8 per annum; and John Swancoat bequeathed land, yielding £6 per annum, to the poor of the parish, for whose relief there are also some smaller charitable donations. A few other bequests have been lost.