Grrf.... One of these days I'll remember that... Well, then convince all the lords to swap duchies. Isolate and ostracize the incompetent duke/duchess. If the city goes rogue and it is retaken, it will join the duchy closes to it. If that is a different duchy, then the new duchy will gain a city, and the old duchy lose one. Sounds like a great way for one of the other dukes in Kindara to add some regions to their duchy.