What has the author John Withals written?

There is no author named "John Withals". There are several possible explanations for this:

* Typographical error: Perhaps you meant a different name, like "John Withers" or "John Witham".

* Misremembered name: It's possible you're thinking of an author but misremembering their name.

* Fictional author: You may have encountered this name in a fictional context, like a book or movie.

If you could provide any additional information, such as the genre of writing, the time period, or any other details you remember, I might be able to help you find the author you're looking for.