[@SilverPaw]
Ooh. I'm liking this character already. I think you've got a knack for this. Wanna make him a former king of Aetherion? If we're looking to make the state of his kingdom uncertain, perhaps his domain is a smaller nation that got absorbed into the larger kingdom. Maybe his kingdom joined an alliance which later transitioned to a state within Aetherion's constitutional monarchy. Or, perhaps a war broke out that got his kingdom conquered and absorbed, whether by Aetherion or by a rival state.

For a more tragic scenario, maybe the entire domain fell under Yddrog's rule, its human population enslaved and replaced with monsters or allied mortal races (like orcs). Perhaps one small, dwindling human settlement remained in hiding within a cave, and Yddrog could throw the prince a bone by giving him authority over the settlement. Maybe something like, "As long as you can procure me a pure maiden to sacrifice every ten years, I see no reason not to allow their pitiful existence. What a generous ruler I am, yes? Feel free to thank me."