HENDREDENNY (HENDRE-DENNI), a hamlet, in the parish of EGLWYSILAN, union of CARDIFF, hundred of CAERPHILLY, county of GLAMORGAN, SOUTH WALES, 5 miles (E. S. E.) from Newbridge, containing 373 inhabitants. It is situated on the south- eastern declivity of a lofty hill, called Mynydd Moylo, and on the right bank of a stream, which separates it from the hamlet of Energlyn: on the banks of this stream are some iron-works, with a few pleasing residences and well-wooded enclosures.