What is "brynberian"

Brynberian is a small village in north Pembrokeshire, Wales, in the foothills of the Preseli Mountains in the Pembrokeshire Coast National Park. It is in the community of Eglwyswrw and is on the B4329 road between Crosswell and Tafarn y Bwlch. Afon Brynberian flows through the village under an ancient bridge and joins the River Nevern to the north.