"RHAIADAR, in the Cwmwd of Meisgyn, Cantref of Penythen (now called the Hundred of Miskin), County of GLAMORGAN, South Wales a Vicarage, not in charge, of the certified value of £15: Patron, The Earl of Plymouth: Church dedicated to St. John the Baptist. The Resident Population of this Parish, in 1801, was 196. The Money raised by the Parish Rates, in 1803, was £132..2..4 3/4, at 6s. 6d. in the pound. It is 1 1/2 m. N. W. from Llandaff. This Parish contains about 1000 acres of Land. Here is a Mineral Spring, called Pistyll Goleu, i. e., The Spout of clear Water; which is found to be efficacious in the rheumatism and weakness of the sinews. It is situate upon the river Taf, and probably derives its Name from the noise occasioned by the Stream. According to the Diocesan Report, in 1809, the yearly value of this Benefice, arising from Tythes, Land, and Pension from The Earl of Plymouth's Estate, was £79. " From: A Topographical Dictionary of The Dominion of Wales by Nicholas Carlisle, London, 1811.