RHOSVERRIG (RHOS-FEIRIG), a township, in the parish of LLANVIHANGEL-BRiN-PA-BUAN, union and hundred of BUILTH, county of BRECKNOCK, SOUTH WALES, 14 mile (N. W.) from Builth; containing 101 inhabitants. This hamlet takes it name, though situated on the western bank of the Wye, from the ancient Verreg, or Verlex, an extensive district between the rivers Wye and Severn, frequently referred to by the Welsh historians as having been governed by its own reguli: it once contained a mansion belonging to Elystan Glodrydd, of one of the five royal tribes, whose descendant still inherits the principal portion of this division of the parish. The river Wye bounds it on the north-east, and the Whevri stream on the south- west; and between these it forms a narrow peninsula, running in a southeasterly direction almost to the town of Builth: it is the most fertile portion of the district, having a soil composed chiefly of loam, though intermixed with some gravel; and the crops are more abundant and varied than those of the remainder of the parish; the rateable annual value of the township being returned at £667. The Radnorshire trap rocks extend for a short distance on the banks of the Wye, at its eastern extremity, where, on the tenement of Parc ar Irvon, near Parc wood, are three mineral springs, close to each other, one saline, another sulphureous, and the third chalybeate. The waters of the saline spring are stronger than perhaps any other in the kingdom, but the sulphureous spring has a weaker impregnation than that at Llanwrtyd. The wells are covered with a small and neat pump-room. Near them is a small projecting rock, overhanging the Wye, which was once fortified, and probably served as a post for guarding the ford of Llechrhyd; it may even have been at one period occupied by the Romans, as the Roman road from Llandrindod must have crossed the Wye near this spot. The Whevri is remarkable for the abundance and excellence of its trout. A commutation for the tithes of the township has been agreed upon, amounting to £80, of which £53- 8. a are payable to the Chantor and Chapter of St. David's, subject to rates that average £2. 4. 6., and £26.13.4. are payable to the vicar of Llanvihangel-Brt--Pa' buan, also subject to rates, averaging £1. 2. S. per annum.