CWMYOY, a parish partly in the hundred of EWYASLACY, county of HEREFORD, and partly in the lower division of the hundred of ABERGAVENNY, county of MONMOUTH, 8 miles (N. by W.) from Abergavenny, containing, with the townships of Bwlch and Toothog, 679 inhabitants. The living is a perpetual curacy, jn the archdeaconry of Brecon, and diocese of St. David, endowed with £200 private benefaction, and £400 royal bounty, and in the patronage of - Lander, Esq. The church is dedicated to St. Michael. Soon after the year 1108, a priory, dedicated to St. John the Baptist, and afterwards known by the name of Llantony abbey, was founded here by Hugh Lacy, for canons regular of the order of St. Augustine, many of whom, by reason of the privations and hardships which they sustained in this place, removed first to the episcopal palace at Hereford, and afterwards, in 1136, to a place neav Gloucester, leaving a few of their brethren at the original settlement at Llantony, whose revenue, in the 26th of Henry VIII., was estimated at about £100: the remains, which are nearly in the centre of the parish, are. in a tolerable state of preservation.