When I was a kid I thought that the candy was named after the butler. Which wasn't so completely stupid, given Peter Pan peanut butter and Kayo syrup(yes, that is in fact a licensed brand, and the Kayo in the name is from Moon Mullins, and this is the last scrap of his existence on earth, how sad).
I always liked the way Cadbury was drawn. And isn't Wodehouse public domain now? I think it'd be funny to take Richie Rich stories and detourn them with Jeeves & Wooster dialogue.