PENBYALLT (PEN-BUELLT), a township, in the parish of LLANGAMMARCH, union and hundred of BUILTH, county of BRECKNOCK, SOUTH WALES, 8 miles (S. W. by W.) from Builth; containing 568 inhabitants. This township, which contains the church, is situated on the road from Build to Llandovery, and at the junction of the Cammarch with the Irvon, over each of which there is a bridge, maintained by the hundred. Many respectable residences are scattered along the banks of the Irvon, and in the neighbourhood of Maes-v-Gevnfordd where the petty-sessions for the hundred are occasionally held; near the church is a celebrated inn, called Tavern-y-Pridd. The vales in the township are luxuriant and well wooded, especially on the banks of the Irvon, and near the fall of the Duke, contiguous to Maes-y-Gevnfordd, though the northern declivity of the Eppynt hills is in most places extremely steep, and sometimes even precipitous The rateable annual value of the township is returned at £1290. Here are two Sunday schools, in which about 280 males and females are gratuitously taught by Calvinistic Methodists.