It's possible:
* The name is misspelled: Double-check the spelling.
* The author is less known: They may have published in a niche genre or under a different name.
* They are a newer author: Their work might not be widely indexed yet.
To help me find information, could you provide more details about Christoph Pezel:
* What kind of books do you think they write? (Fiction, non-fiction, genre)
* Do you know any titles or publication dates?
* Where did you come across this name?
With more information, I might be able to help you find out what Christoph Pezel has written.