Here's the photo of the wood...
http://www.oodwooc.co.uk/ph_tockenham.htm
It would be nice to think that it was a "sacred celtic tree", but probably it had saxon origins.
Seems to me that there is a whole history waiting to be uncovered about Wiltshire churches, and their siting on old stone/pagan sites. Clyffe Pypard is again in the magic prehistoric area round Avebury, about 6 miles away.