* The name is misspelled. Perhaps you're thinking of a different author with a similar name.
* The author is relatively unknown. There are many writers who publish independently or haven't achieved widespread fame.
* The author writes under a different name. Some authors use pseudonyms.
To help me find the information you're looking for, could you please provide:
* Any other details about the author: Do you know what kind of books they write? What is their approximate age? Do you have any more information about them?
* The name of any books you know they've written: Even if you don't know the exact titles, any keywords related to their work might be helpful.
With more information, I can help you find more information about Samuel A. Bryan.