Perhaps someone can help me here, I'm restarting my game due to a mod-incompatibility ruining late-game so I figured I'd ask now.
In my game, I created the Kingdom of Cornwall and went on to found the empire of Cornwall as a custom nation. Despite this, in my game, Cornwall is a foundable vassal and I'm not being loaded as the primary nation of Cornwall. As far as I can tell, this is because my nation isn't saved as 'CRN - Cornwall', but as something else that is non-obvious to me. Short of looking through all 1244 files in \history\countries to try to identify it, is there any way for me to correct this?