What is "cwmyoy"

Cwmyoy is an extensive rural parish in Monmouthshire, Wales. Alternate spellings include Cwm Iau, the name translating from the Welsh as "valley of the yoke"

The village of Cwmyoy is located 7 miles north of Abergavenny and 4 miles south of Llanthony in the Vale of Ewyas in the Black Mountains. It is within the Brecon Beacons National Park, in an upland location just below the broad ridge of Hatterrall Hill, which carries the Wales-England border along which runs Offa's Dyke Path.