There was an interesting documentary on the Green Man I recorded maybe 15 years ago that included interviews with John Boorman (about falling out of a high tree as a child and being gently lowered to the ground), Harrison Birtwistle (Sir Gawain) and John Piper and others, plus a tour of green men in Scotalnd, Josef Beuys, etc.

I have an awful suspicion Mrs Glue dumped it a few weeks ago but daren't look yet.