It's hard to say for sure. You'd have to provide more details about who or what Gunther is in the story. If it's from a well-known historical or documented account, it might be real. But if it's from a made-up novel or fantasy, probably not.
Well, in most cases, such stories like Gunther are fictional. They might be inspired by real events but are usually embellished or completely fabricated to capture people's attention.
Tom Clancy is the well - known author who created the John Clark novels. His works are famous for their detailed descriptions of military operations, political scenarios, and complex characters like John Clark.
Since we only have the name 'john long stories', it's tough to figure out the author. It might be a relatively unknown author named John Long who is just starting out in the writing world. Or perhaps it's a local author who has written these stories for a particular community or audience. Another possibility is that it's an older collection of stories and the author is no longer actively promoting them, which is why there's not much information available.