* The name is misspelled. Perhaps you're thinking of a similar name, like "Friedrich Rust" or "Friedrich Resch." It's always a good idea to double-check spellings.
* The author is relatively obscure. There are many talented authors out there who don't achieve widespread fame. It's possible this author is known only in a specific niche or region.
* The author uses a pseudonym. Many authors choose to write under different names, making it difficult to find their real identity.
To help me find more information, could you provide:
* Any other details about the author or their work? For example, their nationality, genre, or any specific books or articles they might have written.
* The context in which you encountered the name? Did you see it in a book, on a website, or in a conversation?
With more information, I might be able to help you find the author you're looking for.