TRALLONG (TRALLWNG), a parish, in the hundred of MERTHYR-CYNOG, union of BRECKNOCK and county of BRECKNOCK, SOUTH WALES, 54 miles (W. by N.) from Brecknoek; containing 284 inhabitants. This parish is bounded on the south by the river Usk, and on the east by the stream Brin, which separates it from the adjacent parish of Aberyscir; and is also watered by the little river Cilieni. It is surrounded by the parishes of Llywel, Devynock, Aberyscir, and Llanvihangel-Nant-Briin; avid contains from 3000 to 4000 acres, nearly equally divided between arable and pasture, with a large portion of woodland; the soil is composed partly of gravel and clay, and produces different sorts of corn, but chiefly barley and oats; the prevailing timber consists of oak, ash, and fir, and the scenery in several situations is very beautiful. It is said to have been at an early period entirely covered with woods, which were frequented by wild boars. The surface is undulated, and in some parts hilly; and the great road from London, through Brecknock, to Milford passes within half a mile to the south of the parish, the rateable annual value of which has been returned at £1817. Trallong constitutes a prebend in the Collegiate Church of Brecknock, rated in the king's books at £7. O. 7., and in the gift of the Bishop of St. David's. The living is a perpetual curacy, endowed with £600 royal bounty; net income, £59, arising principally from three farms, containing 250 acres, in the parishes of Merthyr-Cynog, Llandevalley, and Um. thew, respectively; patron and appropriator, Prebendary in the Collegiate Church of Brecknock, but the last presentation, in 1815, was by the Bishop, in virtue of lapse, as the lessee of the tithes also claimed the right. The church, dedicated to St. David, is a plain ancient edifice, about 120 feet long by 20 broad, and contains 38 pews, 12 of which are free. There is a place of worship for Welsh Calvinistic Methodists. A school, containing about 40 children daily and 45 on Sundays, is supported partly by a donation of £5 per annum from the Rev. Mr. Williams, of Abercamlais, and one of £6 from Penry Williams, Esq., of Penpont, and partly by payments from the parents; and there is also a Sunday school, in which about 55 males and females are gratuitously taught by the Methodists. On a hill at the eastern extremity of the parish are the remains of a British fortification, called Twyn-y-Gaer, overlooking the river Usk, on the other side of which is another of the same appellation, crowning the summit of a hill in the parish of Llanspythid, directly opposite to the former, from which it is about a mile and a half distant. The celebrated Owain Iolo Glick is said to have been buried in a field in the parish that still retains his name.