I was a duke under an ai king, my son I granted some land rebelled when i tried to imprison him after he tried to kill me, he died during the war (he was burned at the stake I think his attempt to kill me may have been part of a cult of Kali event) and i was confused for a minute when I was now no longer under my king. I saved immediately after it happened cause i remembered this thread after I figured out what happened. Additional info not sure if matters or not: This is multiplayer game save, I was not the host, host had the dlc I do not.