It's possible that:
* The name is misspelled. Could you double-check the spelling?
* The author uses a different name. Are you sure that is the full name of the author?
* The author is not well-known. It's possible that the author is not published by major houses or is not well-known online.
If you can provide more information, such as the genre of their work, the time period they write in, or any other details, I might be able to help you find the author.