His life ended tragically as he was blinded in his attempt to regain his throne from Andronicas Ducas, his former subordinate.
His ultimate defeat was precipitated by the retreat of the mercenary leader Roussel de Bailleul, who was most likely involved in the plot against him. That battle had been caused by his refusal to extradite Arisiaghi, the brother-in-law of his chief enemy. Despite the failings of his nephew Manuel Comnenus, he won several victories but was unable to overcome the conspiracy led by his wife, the Empress Eudocia, and her son Michael VII. His life ended tragically as he was blinded in his attempt to regain his throne from Andronicas Ducas, his former subordinate. FTP, name this chief rival of Alp Arslan, the Byzantine emperor who was defeated in 1071 at Manzikert.
His ultimate defeat was precipitated by the retreat of the mercenary leader Roussel de Bailleul, who was most likely involved in the plot against him.
{Romanus IV} Diogenes