It's possible:
* There's a typo in the name: Could you double-check the spelling?
* The author uses a different name: Maybe they write under a pseudonym or have a different name they use professionally.
* The author is less known: It's possible they haven't published widely or are more prominent in a specific niche.
If you can provide more information about the author (e.g., the genre they write in, their approximate age, or a book title they wrote) I can try to help you find more information.