Quote Originally Posted by SmoothPancakes View Post
As far as I know, if they are your vassal, you can strip them of their title any time you want (as long as there isn't an active truce between you and them). It's only the counties or duchies that are not a part of your kingdom/dynasty that you have to fabricate claims and go to war or marry into their lineage.
How long does a truce last then? Cause I couldn't strip Breifne's current holder of his title after 5 years or so I think it was (I could be wrong on the amount of time though).