Benoni Beheyt, Belgian, 1940 -
I am embarrassed to say that I know next to nothing about Benoni Beheyt. I know he was Belgian, and I know he won the World Road Race Championship in 1963. And, errrr, that's it.
I believe that he used one of the, then new, Campagnolo Record (1020) derailleurs to win his World Championship.