 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.