LLANYCHAIARN (LLAN-LLWCHAIARN), a parish, in the union of ABERYSTWITH, lower division of the hundred of ILAR, county of CARDIGAN, SOUTH WALES, 1 mile (S.) from Aberystwith; containing 666 inhabitants. This parish is bounded on the west by the bay of Cardigan, and on the north and east by the river Ystwith; and the road from Aberystwith to Cardigan passes through it from north to south, crossing the Ystwith by a romantic bridge, from which there is a fine view up its vale, with the remains of the ancient fortress of Llanychaiarn Castle in the foreground. There are some pleasing residences in the parish, the principal of which is Tan-y-Bwlch. The living is a perpetual curacy, endowed with £600 royal bounty; net income, £97; patron and impropriator, J. P. B. Chichester, Esq. The church, dedicated to St. Llwchaiarn, was erected as a chapel to the rectory of Llanbadarn-Vawr, of which parish this formed a portion, the inhabitants still contributing to the repair of part of the body of that church; it is an ancient structure, delightfully situated on the banks of the river Ystwith, being distinguished within by an air of neatness and comfort; the porch is a good specimen of early English architecture, and there are several interesting monuments, including a handsome one to the memory of General Davies, who greatly distillguisbed himself in the peninsular war, particularly on the plains of Salamanca, and whose remains were deposited in a vault in the church. At Blaenplwyv, at the southern extremity of the parish, is a place of worship for Calvinistic Methodists. A school-house has been erected at a place called Chancery, at the cost of the inhabitants, in which about 30 children are instructed at the expense of their parents; and a Sunday school, in which are 190 males and 1130 females, is supported by voluntary contributions of Calvinistic Methodists, aided by small payments from the scholars. Llanychaiarn Castle, of which there are but few remains, stood on the eastern bank of the Ystwith.