Against Marcian
Illus was sole consul in 478, and in 479 he was instrumental in crushing the dangerous revolt of Marcian, grandson of the Byzantine emperor of that name, and son of Anthemius, emperor of the West. Marcian had married Leontia, daughter of the late Emperor Leo by Verina, and sister of Ariadne, Zeno's wife. His revolt took place at Constantinople, where he defeated the troops of Zeno with the support of the mob, and besieged him in the palace. For a moment Illus wavered, but his failing courage or fidelity was restored by the assurances of an Egyptian soothsayer whom he patronised. Marcian's forces were corrupted by Illus; and Marcian himself, with his brothers Procopius and Romulus, was taken. The brothers escaped, but Marcian was sent, either to Tarsus in Cilicia, and made a priest in the church there, or to the foot of Papurius, or Papyrius, a stronghold in Isauria, then used as a state prison.
Trocondus, the brother of Illus, was consul 482; and Illus himself enjoyed the dignities of patricius and magister officiorum. He is said to have employed his power and influence well, and to have rendered good service to the state in peace as well as in war. He assiduously cultivated science and literature.
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