Reposting:
I've actually also got a question regarding Ardyn that I was hoping you guys could help me out with. I think I mostly understand him and his motivations from what was said in the game, but I'm a little confused as to the details regarding his relationship with the royal family. So based on his real last name, was he one of Noctis's ancestors? Someone who was supposed to be king, but was banished by the current king before that could happen? Or was his line the true line of kings, only to be cast aside as a new family (Noctis's line) was promoted to be the new Kings by the Gods? If possible, could you also point me to dialogue from the game that clarifies these points?