* There's a misspelling: Perhaps you're thinking of a different name, like Frank Walter Allen or Frank Waller.
* The author is less known: There could be an author with this name, but they may write in a niche genre or have a smaller following.
* The author is new: It's possible they're a relatively new author who hasn't yet gained wide recognition.
To help me find the information you're looking for, could you provide more context? For example:
* What genre of writing are you interested in?
* Do you remember any of the titles of the books or articles written by this author?
* Do you have any other information about the author, such as their birth year or location?
With more information, I can assist you in finding the author you're looking for.