Talgarth

A town and the royal residence of Brychan, King of Brycheiniog in the 5th century A.D., and later a town in south Powys. 
A fort near Cwmdu (Pen-y-Gaer) is of significance to Talgarth, as it was the site where a 1st-century AD British chieftain, Caratacus (of the Catuvellauni tribe), fought with the Romans.
The town's name derives from the Welsh words tâl (forehead or brow of a hill) and garth (mountain ridge or promontory), thus meaning "end of the ridge".