Captain Peter Saar Gwynleve is a character in The Witcher 3: Wild Hunt.
He can be found at the tower of the Garrison.
Captain Peter agrees to give the information but only if Geralt will take care of a Griffin that's been causing problems in the area.
This begins another quest, called "The Beast of White Orchard"
Geralt: Plan to requisition something from him, too?
Captain Peter: It is necessary. Yes of course, we are at War, in case you have not noticed. Who are you? Speak.
Geralt: Geralt of Rivia. Witcher.
Captain Peter: A vatt'ghern - this explains why I did not hear your footsteps. What do you seek here?
Geralt: Yennefer of Vengerberg. Where was she headed?
Captain Peter: That is a military secret.
Geralt: Haven't thrown me out yet. Haven't called the guards. So go ahead - what's your price?
Captain Peter: There is a Griffin in the area. Slay it, and then I shall see what I can do.
Geralt: Why do you care about this Griffin?
Captain Peter: Because I care about people. The beast has killed ten already. Including a few of my men. To hunt it, I would need to mobilize the entire garrison, comb the woods, organize a battue. Simply impossible.
Geralt: Too big a hassle?
Captain Peter: No. Too high a risk. I cannot dispers my forces. Temeria's army we have crushed, but its common folk remain, ready to answer a call to arms. So as to this Griffin, I can sit on my hands, or hire a professional.
Geralt: It's a deal. Some questions before I start. Know where the Griffin has its lair?
Captain Peter: It kept to the Vulpine Woods at first. I sent a patrol there, fuve young men. A hunter found them two days on. I only recognized them because they wore our plate. Since then, the Griffin has grown bold. Attacks in villages, fields, on the main road.
Geralt: Meaning it's abandoned its lair. Gonna have to set a trap.
Captain Peter: I judge from your tone this will not be easy. What will you require?
Geralt: Need more information about this griffin. Its sex, why it's abandoned its lair.
Captain Peter: Shall I bring you witnesses?
Geralt: They won't say anything I don't already know. I need to go where your men died, look around. What's the name of the hunter who found them?
Geralt: I'll need bait, a specific herb - Buckthorn. Scent should lure the griffin from ten miles off.
Captain Peter: Buck... buckthorn? I do not know of this. But I am not yet fluent in the common tongue.
Geralt: Mhm. Probably mastered the basics though, "hands up", "kill them"...
Captain Peter: Good hunting to you.
- Captain Peter signed the Imperial Edict #18/45