RUTHIN (Rhudd ddin, "red fortress"), a municipal and contributory parliamentary borough (with Denbigh and Holt) and market town of Denbighshire, N. Wales, situated on a hill rising from the river Clwyd, 21 m. from Chester, and 215 from London by rail. Pop. (1901) 2643. It is on the Great Western railway (Denbigh, Corwen & Ruthin branch). Apart from the legends of Arthur and his limestone block (shown in the market-place), the first event of note in its history is its connexion with the de Grey de Ruthyn family (the first lord died 1353). Owen Glendower attacked it unsuccessfully in 1400. It was sold by the de Greys to Henry VII., and Elizabeth gave it to the earl of Warwick. In 1646, after two months' siege, it was dismantled by the Parliamentarians. The new castle occupies the same site, and is built of the same coloured sandstone as the old. New buildings for the Free Grammar School (founded in 1595 by Gabriel Goodman, dean of Westminster, who also in 1590 had built the hospital for twelve decayed housekeepers), were opened in the town in 1893. The old (conventual) Anglican church of St Peter, once belonging to “Les Bonshommes,” and made collegiate in 1310 by John de Grey, has a Perpendicular north aisle roof, nearly 500 panels of carved oak, and cloisters which have been made into a house for the warden of the hospital. Agriculture is the staple, but there are chemical, aerated waters, bricks, terra-cotta and other manufactures.