An event is taking place within one of the BR games I play where one of my family was married to another house, a lesser house. Now this land seeks to rebel against the Empire, our game has an emperor. Now am I right in the thinking that since my house has a partial claim to said realm that once I slay the rebellious fool, who has sought to murder me and parts of my family, that I should have a leg up on claiming hereditary rights to the lands?

Just trying to get a general idea from perhaps more knowledgeable BR addicts