There are a few possibilities:
* Typo: Perhaps you made a typo in the author's name. Double-check the spelling and try searching again.
* Incomplete Name: It's possible that "M A R Gunston" is only a partial name. If you have more information about the author, like their full name, a book title, or a genre they write in, that might help identify them.
To help me assist you further, could you please:
* Confirm the full name of the author if you know it.
* Provide any other information you have about the author, such as book titles, genres, or any other details you remember.
With more information, I'll be able to give you a more accurate answer.