He did kinna grow on me, but there are a few more problems. He's only a couple of years apart from his brother the king so he'll be almost useless if he ever becomes king. Also, that whole family line is crazy and the next eligible heir is from another line--so I want to kill this guy off before the king's kid comes to age(unless I want to keep dealing with psycho heirs).

This is his king brother. He's only mildly crazy and quite decent so far, but one more crazy level and his authority takes a -4 hit.