It's possible:
* The name is misspelled. Double-check the spelling.
* The author is relatively unknown. If the author is new or works in a niche genre, they might not have a widely recognized presence online.
* The author uses a pen name. It's possible they publish under a different name.
To find more information:
* Try searching online: Use a search engine like Google or DuckDuckGo to search for "Samuel Grainger author."
* Check author databases: Websites like Goodreads, LibraryThing, and Amazon have databases of authors. You can search for Samuel Grainger on these sites.
* Look for books by that name in libraries or bookstores. If you have a local library or bookstore, you can check their catalogs or browse their shelves.
Let me know if you have any other information about the author, like the genre they write in or any titles you've seen, and I might be able to help you find more information.