RADYR (RHAIADR), a parish, in the union of CARDIFF, hundred of KIBBOR, county of GLAMORGAN, SOUTH WALES, 5 miles (N.
W. by W.) from Cardiff; containing 279 inhabitants. This parish, whereof the name, signifying a cataract, is probably
derived from the rushing waters of the river Tat on which it is situated, and by which it is bounded on the north-east,
was formerly comprehended within the hundred of Miskin, from which it has been recently separated. It comprises about
eleven hundred acres of arable and pasture land, inclosed and in a good state of cultivation; the surface is in some
parts elevated and in others fiat, but nowhere subject to inundation; the soil is a strono5 brown earth, favourable to the
production of go crops of grain of all kinds, potatoes, and hay. good substratum is partly a hard brown stone, and partly
limestone of very good quality. Radyr Court, formerly the seat of the family of Matthew, ancestors of the late Lord
Llandaf, has been partially taken down, and the remainder has been modernized, and converted into a farm-house. The
turnpike-road leading from Cardiff to Llantrissent passes a little to the south of the parish; and the tram-road from the
Pentyrch works to the tin-mills at Melin Grufydd runs through it. The living is a vicarage, endowed with £60 per annum
private benefaction, and £200 royal bounty; net income, £59; patron and impropriator, Earl of Plymouth, who is lord of the
manor: the tithes have been commuted for a rent-charge of £113. 9., of which a sum of £38. 9. is payable to his lordship,
and £75 to the vicar, the latter subject to rates, arerag. ing £5 per annum. The church, dedicated to Si. John the
Baptist, is a neat plain edifice, with a curious turret at the west end. There is a place of worship for Calvinistic
Methodists; and a Sunday school for gratuitous instruction is supported by subscription, and contains about 50 macs and
females, connected with dissenters: In the parish is a spring of very cold water, called Y Pistyll Goleu, " the bright
water-spout," which issues from the side of a hill, under a considerable depth of earth over a limestone rock: it has by
some writers been termed mineral, but It is not known to possess any other properties than  that of its extreme coldness,
which renders it efficacious in curing sprains and weakness of the sinews.