ERDDIG, a township, in that part of the parish of GRESFORD which is in the hundred of BROMFIELD, county of DENBIGH, NORTH WALES, 1 mile ($. W. by S.) from Wrexham, containing 141 inhabitants. It is surrounded on all sides by the parish of Wrexham, except the east, where it joins that of Marchwiel, and is intersected by Wat's Dyke, an ancient boundary between England and Wales. On this rampart, which may be distinctly traced, stands Erddig Hall, the seat of Simon Yorke, Esq., whose father, Philip Yorke, Esq., was author of the "Royal Tribes of Wales." This mansion is beautifully situated between two small vales, watered by a winding stream, and fringed with hanging woods, in one of which are the remains of an ancient camp, almost entire, placed at the junction of two mountain torrents, and defended by deep and strong intrenchmeats. At the point of land impending over these streams is an elevated mount, inaccessible on every side, except that towards the camp; and on the northern side of the latter is an entrance, which appears to have been defended by a strong gate. This work is supposed by the inhabitants of the neighbourhood to be of Roman origin, but no Roman antiquities have been found to corroborate that opinion, and the only remains of mural defences consist of a few stones cemented with mortar. In the mansion are many paintings by eminent masters, among which is a full-length portrait of the notorious Judge Jeffreys, in his robes, by Sir Godfrey Kneller.