but didn't Mr Fox do a song about Pendle Hill?

The story is that Carole Pegg was reading Mist over Pendle when they were resident in Lancashire, and they wrote a song called Pissed over Mendle which the record company shortened to Mendle. I'd say in terms of Pure Folk it doesn't get any better really:

http://www.youtube.com/watch?v=M3UgnRLoDFA