* The name is misspelled: Check for variations of the name, including middle initials and hyphenation.
* The author is relatively unknown: There could be a lesser-known author using this name. You could try searching online book databases with variations of the name.
* The author uses a pseudonym: J C B Hall-Matthews might be a pen name. If you know anything about the genre or type of books they write, that might help narrow down potential aliases.
Please provide more information, such as:
* What kind of books are they known for? (Genre, subject matter)
* Do you have any other details about them? (Nationality, time period)
With more details, I might be able to help you identify the author.