Named Caesar in 769
records him involved in various plots against Emperors. First in May, 776 against his older half-brother Leo IV the Khazar . He was punished via flogging and exile. Second in September, 780 against his sister-in-law, Regent Empress Irene . He was exiled to a monastery. Third in August, 792 against his nephew Constantine VI . He was blinded and placed in confinement within an imperial residence. Fourth in October, 797, against Irene who had deposed her son. He was exiled to her native Athens . Fifth in 812 against Michael I Rangabe . His new exile place was called Aphousia, somewhere in the Sea of Marmara . He does not seem to resurface.