* There is a lesser-known author with this name: It's possible that George William Campbell is an author who has written works but hasn't achieved widespread fame.
* The name is incorrect: There might be a slight error in the spelling or the author's full name.
* You're thinking of a different person: It's possible you're confusing this author with someone else who shares a similar name or occupation.
To help me identify the correct author, please provide any additional information you have, such as:
* Genre of writing: What type of books does this author write? (e.g., fiction, non-fiction, poetry)
* Time period: When did this author live or publish their work?
* Specific titles: Do you remember any of the titles of their works?
* Any other identifying details: Did this author have a particular style or focus?
With more information, I can try to find the author you're looking for.