The Saxons were victorious, and Cenwalh advanced west through the Polden Hills to the River Parrett, annexing eastern and central Somerset.
There is no other place-name in Britain which bears any resemblance, but Cenwalh fighting at Pontesbury makes little sense in the context of him establishing a kingdom in Somerset.
If the battle was in Shropshire, for an unknown reason he marched his army considerably more than a hundred miles to the north, leaving his embryonic Somerset kingdom vulnerable.
David Cooper posits that the battle was actually fought at Ponter's Ball, an ancient embankment about a mile to the south-east of Glastonbury Tor.
Almost a mile in length, this defensive dyke is aligned north-to-south and crosses a piece of raised ground which, in the seventh century, provided the only access by land to the Isle of Glastonbury.