* The name is misspelled: Perhaps you are thinking of a different author with a similar name. Could you double check the spelling?
* The author is less known: It is possible that Walter Pickles is a local or lesser-known author. You may need more information to find their work, such as their location or genre.
* The author is fictional: It's also possible that you've encountered the name in a fictional context, like a book or TV show.
Please provide more details about Walter Pickles or the context in which you encountered the name so I can help you find information about their work.