A woman stopped me in a pub last night. "John!"

My name's Phil, so I was going to ignore her, but she caught my eye and accosted me again: "John! It is John, isn't it?"

Apparently I'm the spitting image of a man called John Biddulph, who lives in Cornwall and - wait for it - plays the guitar. She described him in some detail, identifying only a few small physical differences between him and me.

This may be asking a lot even for the fearsomely well-connected and erudite hordes of Mudcat, but I'll ask anyway: does anyone know a Cornish guitar-playing John Biddulph?