GLYN-RUMNEY (GLYN-RHYMNI), a hamlet, in the parish of LLANVABON, hundred of CAERPHILLY, county of GLAMORGAN, SOUTH WALES, 4 miles (N. by w.) from Caerphilly, containing 276 inhabitants. It is bounded on the east by the river Romney, over which is the bridge of Pontystrad, leading into Monmouthshire. The road from Caerphilly to Merthyr-Tydvil passes through a vale, parallel with the river, the steep sides of which are well wooded, and are adorned in different places with a few respectable and agreeable residences.