So i started a Vlandia themed campaign, there was a rebellionn Sargot. I got excited and went to see the name of the clan (it had the Harlaus banner so i hyped on seeing something implying Swadia) it was "Sargot's Rebels" or something like that. I mean it is just a name but maybe this also could be rng-ed from a existing name pool just as the character names do?
Edit: As a addition, maybe sometimes rebels may not be nobles, in that case just "X's rebels" format could also work, it would be a mob or peasant revolt. I could build up more dynamics depending on this and deepen the mechanics but it is kinda too late dor those, so i would like to see this simple version since it must be easy to implement (and create immersion easily) (and a hint of noble/non-noble distinction of Warband).