Frank Richards - The Most prolific children's story writer ever!
I have often thought that the question 'Who is the most prolific writer of children's fiction?' would make an excellent question for televised quizzes. I can imagine 'Who wants to be a millionaire?' providing three good possible answers plus the obligatory outsider to beguile the competitor, eager to grab the £1,000,000 prize: Enid Blyton, W.E.Johns, Roald Dahl would be the obvious frontrunners.
Or perhaps University Challenge could offer this starter for ten: 'Which prolific writer of children's fiction's name never appeared on any of his works?' The answer is the man the fiftieth anniversary of whose death passed almost uncelebrated last Christmas Eve, Charles St-John Hamilton. He never wrote under that name, preferring a plethora of pseudonyms, the most common of which was Frank Richards of Billy Bunter fame.