BLETHVA (BLEDDVA), a parish partly in the hundred of KEVENLLEECE, and partly in the hundred of KNIGHTON, county of RADNOR, SOUTH WALES, 6 miles (W. S. W.) from Knighton, containing 233 inhabitants. This parish is situated within the boundaries of the forest of Blethva, and near the river Lug, and is intersected by the high roads from Knighton in this county, and from Builth in the county of Brecknock, to Newtown in Montgomeryshire. Its aspect is barren and uninviting: a great part of it being little better than a dreary unproductive waste, agriculture is here in a rude state; the mountains, however, afford pasturage for large flocks of sheep. The petty sessions for the hundred are occasionally held here. The living is a rectory, in the archdeaconry of Brecknock, and diocese of St. David's, rated in the king's books at £10. 12. 1., and in the patronage of the Bishop of St. David's. The church, dedicated to St. Mary, is a large structure, consisting of a nave and chancel, but without any claim to architectural notice. The average annual expenditure for the support of the poor is £114. 6.