It's possible that:
* The name is misspelled: Perhaps the author's name is similar but slightly different. Could you double-check the spelling?
* The author is less known: It could be a lesser-known author or one who writes in a specific niche.
* The author uses a pseudonym: Some authors use pen names, so it's possible "Townsend Rich" is a pseudonym.
To help me find the author you're looking for, please provide more information:
* Any other details you know about the author or their work: Do you know anything about the genre they write in, any book titles, or the time period they are active in?
* Any specific book titles: Do you know the title of a book by this author?
With more details, I might be able to help you find the author you're looking for.