It's possible that:
* You are mistaken about the name: Perhaps you misremembered the author's name, or are thinking of a pseudonym.
* The author is not well-known: This author could be relatively unknown, writing in a specific niche or genre.
* The author is fictional: It's possible that "Quaestor" is a character or author from a fictional world.
Could you please provide more context or information about this author?