* Typo or misremembered name: You might be thinking of a different author with a similar name. Could you double check the name or provide more information?
* Self-published or niche author: John Wagner Pritchard could be a self-published author or someone writing in a very specific niche. Without more information, it's difficult to find their work.
To help me find the author you're looking for, could you please provide:
* Any other details about the author or their works: Do you know what genre they write in? Do you remember any titles or a brief description of their writing?
* Any other ways to spell the name: Could it be John Wagner-Pritchard, or John Pritchard Wagner?
With more information, I can try to help you find the author you're looking for.