it might be a good idea to contact Vic legg of Bodmin folk club, he is on facebook and would remember Charlie Bate, ormightbe contacted through the club
alternatively the clog maker.. john the fish, who used to sing with Brenda Wooton.

there was ALSO a guy called Lar Cann, who was also involved with Bodmin folk club at that time.
Lar had a bit of a reputation for being cranky, he was alleged to have said to Peter Bond the songwriter," I will give you a gig if you sing all tradtional songs".
Lar Cann has a website as an Artist.