イサキオス2世アンゲロス
In 1193 he refused any military support to the rebellion of his brother-in-law Constantine Angelos Doukas, a cousin to the emperor and commander of the Byzantine armies in Philippopolis. Doukas proclaimed himself emperor and marched his troops onto Adrianople, but he was betrayed by his followers and surrendered to Isaac II Angelos for a pardon in return.