RHOSDIAU (RHOS-DDO), a parish, in the union of ABERYSTWITH, upper division of the hundred of ILAR, county of CARDIGAN, SOUTH WALES, 7 miles (S. by E.) from Aberystwith; containing 120 inhabitants. This parish, which is situated within a few miles of Cardigan bay, is of very small extent. The surface is varied, and in some parts mountainous; and the surrounding scenery is characterised rather by features of rugged boldness than of pleasing or picturesque appearance: the soil in the lower grounds is productive, and the declivities of the hills afford scanty pasturage for sheep and young cattle. Its distance &mu any great turnpike-road renders this place difficult of access, and it has therefore little intercourse, even with the neighbouring villages. The living is a discharged rectory, rated in the king's books at £1. 6. 8., and endowed with £200 royal bounty; present net income, £101; patron, Bishop of St. David's: the tithes have been commuted for a rent-charge of £63, subject to rates, averaging £3; and there is a glebe of 40 acres, valued at £21. 10. per annum. The church, dedicated to St. Michael, having for some time been in a state of ruinous dilapidation, was rebuilt in 1816. Here is a Sunday school in which 60 males and females are gratuitously taught.