CWMDC (CWM-DO), a hamlet, in the parish of LLANGONOYD, hundred of NEWCASTLE, county of GLAMORGAN, SOUTH WALES, 8+ miles (N.
by w.) from Bridgend, containing 968 inhabitants. This hamlet, the name of which signifies " the black vale," is situated
in a valley, through which flows a tributary of the river Llynvi, and in a wild and mountainous district, remarkable for
its fossil and mineral productions. The principal of these are iron-ore and coal; and, owing to the extension of the
works, this place has of late years greatly increased in importance and population, the latter of which, in 1821, amounted
only to three hundred and seven inhabitants. A tram-road for the cononveyance of these articles to the harbour of
Porthcawl and the town of Bridgend has been constructed. This hamlet separately supports its own poor: the average annual
expenditure is £152. 5.