You are a veritable fountain of information, David! 🙂
Wiltshire is not really my neck of the woods, although I have been to Stonehenge a few times (first time as a child with my parents and their friends in the 70s – I have blurry memories of tie-dyed shirts, long hair, moustaches and sunglasses). I’ve also been to Avebury and was lucky enough to visit Carnac (Karnag) in Brittany a few years ago.
I thought you might find this publisher interesting too — https://www.meynmamvro.co.uk/
Meyn an Mamvro (Cornish: Stones of the Motherland)