LLANRHYCHWYN (LLAN-RHYCHWYN), a parish, in the union of LLANRWST, Uchgorvai division of the hundred of NANTCONWAY, county of CARNARVON, NORTH WALES, 14 mile (W. by N.) from Llanrwst; containing 551 inhabitants. This parish, which is exceedingly mountain-, ous, contains an abundance of pyrites, worked by a company from Liverpool, who ship the produce at the adjoining quay of Trevriw, on the river Conway, which forms the eastern boundary of the parish, and is navigable from its mouth below the town of Aberconvray to Trevriw, There are alsO three extensive slate quarries within its limits, at the distance of about one mile and a half from the shipping-place, in which upwards of one hundred persons are employed: lead-ore has likewise been obtained here, and some small veins are now being worked. Numerous varieties .of quartz crystals are found, some of them of a beautiful amethystine colour, and of considerable value. The rateable annual value of the parish has been returned at £1528. 16. 6. The living is a perpetual curacy, annexed to the rectory of Tr6vriw; and the tithes of this parish and that of Trevriw, have been commuted for a rent-charge of £200. The church, dedicated to St. Rhychwyn, is situated among barren mountains, at a considerable distance from any houses, and, from the rudeness of its architecture, appears to be of great antiquity: it is vulgarly observed of this simple structure, that it was erected prior to the invention of the saw and plane, since no indication of the use of these instruments can be discovered in any part of the edifice: in the east window are the remains of some handsome stained glass, with a mutilated date, which seems to have been MCCCCXXII. Near Capel Curig, at the extremity of the parish, is a place of worship for Calvinistic Methodists, who have also four Sunday schools in different parts, and the Independents three; in these-schools about 185 males and 170 females are instructed gratuitously. Two trifling bequests, producing about 13s. per annum, are distributed among the poor at Christmas. Taliesin, the celebrated British bard, who flourished about the middle of the sixth century, is stated to have resided in the parish, near a small lake, or pool, called Geirionydd.