Ethelbald Rex Southmark, King Owen's younger half-brother, presents a noble image through attire and initial administrative competence. However, this capable ruler persona proves deceptive. Though appearing sensible and intelligent, his actions reveal deep flaws: pronounced arrogance, a consistent underestimation of opponents, and poor self-assessment. He directly threatens William, explicitly stating his willingness to fabricate rumors to cover William's death, yet his lack of intelligence allows William to easily overpower him. He overlooks the depth of public trust in William and fails to appreciate his fortune in facing an opponent bound by strong moral principles. Ethelbald acts primarily for self-gain but exhibits genuine concern for the welfare of his own people, acting as he believes benefits them; this concern does not extend beyond his sphere. His noted leadership abilities coexist with high knowledge but low intelligence.