Denouncing a Lord is a quest given by one vassal against another. All you have to do is ask a lord if there's a way you can advance your standings in the realm together while they are at a castle, town or on the Overland map by themselves. If there are other lords nearby, they will tell you: Perhaps we can discuss this in a more private setting.
The next time you encounter the target lord, you will be given a speech option to denounce him among the usual speech options. After you denounce him, he will (usually) challenge you to a duel. You can withdraw what you said and apologize, causing you to fail the quest and lose relationship with both the lord you were going to denounce and the lord you accepted the quest from. Alternatively, you can accept the challenge to fight him and complete the mission, which will subtract 20 relationship points from the lord you denounced and add around 5 points to the one you helped.
Due to the highly disproportionate exchange in relation, this quest is not advisable if you wish to be on relatively good terms with everyone.
Transcript[]
Questgiver Lord: I tell you, that blubbering fool (king) is not fit to rule (capital). God knows he would be divested of his lands in an instant were it not for one of his loyal vassals, (lord). As long as he has his vassal aiding him, it will be a difficult job beating him. So I need to get (lord) out of the picture, and I have a plan just to do that... With your help, naturally.
- 1 - "My Lord, I am all ears."
- Questgiver Lord:
- 2- "I don't wish to involve myself in anything dishonourable against (lord)."
- Questgiver Lord: Dishonourable? I was hoping I could count on you, (player), but you've shown me what a fool I was. I shall have to find someone whose loyalty I can trust.
- Upon denouncing target lord: "I want to tell you something. We have had enough of your (Adjective) ways."
- Target Lord: Hmf. Really? Is that your opinion, or did one of my rivals put those words in your mouth? Never mind. I will not play your game. Go away, and take your intrigues with you.