LLANDEFAILOG-FACH, a hamlet and a parish in the district and county of Brecon. The hamlet lies on the river Honddu, near the Sarn-Helen way, 2½ miles NNW of Brecon town and r. station. Acres, 2,000. Real property, £1,420. Pop., 222. Houses, 47.—The parish contains also the chapelry of Llanfihangel-Fechan, and comprises 4,211 acres. Post town, Brecon. Real property, £2,678. Pop., 400. Houses, 80. The property of the hamlet, as also that of the chapelry, is divided among a few. Llandefailog House and GlanHonddu are chief residences. The land is hilly, but generally fertile. The living is a rectory in the diocese of St. David's. Valne, £368.* Patron, the Lord Chancellor. The church, excepting the tower, was rebuilt in 1831; underwent improvement in 1857; contains monuments to the Powells, the Watkinses, and others; and is dedicated to St. Maelog. There is a pillar stone, 6 feet high, to Rhain ap Brychan. The p. curacy of Llanfihangel-Fechan is a separate benefice. Charities, £12.

(John Marius Wilson, Imperial Gazetteer of England and Wales (1870-72))