GARTHBRENGY, or GALLT-BRENGY (GARTHBRENGI), a parish partly in the hundred of MERTHYR-CYNOG, and partly in the hundred of PENCELLY, county of BRECKNOCK, SOUTH WALES, 3 miles (N.) from Brecknock, on the road to Builth, containing 163 inhabit- ants. This small parish, which constitutes a prebend in the Collegiate Church of Christ at Brecknoek, rated in the king's books at £3. 6. 8., is pleasantly situated on the banks of the river Honddfi, in a retired part of the county, the scenery of which is pleasingly varied; the banks of the Honddf present many wooded knolls, which have a beautifully picturesque appearance. The living is a perpetual curacy, in the arch-deaconry of Brecknock, and diocese of St. David's, endowed with £400 royal bounty, and £200 parliamentary grant, and in the patronage of the Prebendary of Garthbrengy in the Collegiate Church of Brecknock. The church, dedicated to St. David, is situated on an eminence, which is overlooked on the north by a mountain of loftier elevation: it is an ancient structure, with a tower at the western end, containing four small bells: the body consists of a nave and a north aisle of equal breadth: the roof is panelled, and the interior is appropriately arranged for the use of the parishioners. There is neither parsonage-house nor any glebe land attached to the living: the tithes of the parish are appropriated to the prebendary, by whom they are let at a reserved rent. Sir David Gam, who so gloriously distinguished himself in the battle of Agincourt, was probably a native of this parish, in which he passed the early years of his life, on an estate called Peytyn-gw5n, the mansion on which was burned to the ground by Owain Glyndwr, during the insurrection headed by this chieftain, who justly regarded David as his personal enemy. The average annual expenditure for the support of the poor is £75. 18.