Let's revive a pseudo-religion almost wiped out 2,000 years ago by the Romans (who would have finished the job if they could have been bothered to cross the Menai Strait) and claim some deep spiritual link with a stone circle built thousands of years before that. You couldn't make it up! Oh, wait - they did!
Hows that then. The "wassocks" at Stonehenge dress in white robes (like the Eistedford do). They play strange music (like the Eistedford). They are all very strange but the the Stonehenge people speak English which the Eistedford lot seem unable to do and still speak some early language only a few per cent of anyone understands.