I remember reading with fascination reports of the French wrestler, billed in UK as Le Hippy, when he wrestled at the Royal Albert Hall. I imagine that was his sole UK appearance?
I am now pleasantly surprised to find a match of his on line: https://www.youtube.com/watch?v=K7348-r7Zog
Nice in the comments to see he is still alive at age 89 and his name is Gaston Jung Valléé.
The first bout features a very active and unmasked Batman, Dave Larsen.