Irene became sole ruler of Byzantium on 17 August 797, becoming the first woman to hold the empire in her own right.
On 17 August 797, Irene became the sole ruler of the Byzantine Empire after the overthrow and blinding of Constantine VI. This was a singular historical moment: Irene is widely recognized as the first woman to rule the Byzantine Empire in her own right, not merely as consort or regent. Her accession as sole sovereign made her the effective autokrator of the Eastern Roman Empire.
The significance of the event is difficult to overstate. In a deeply patriarchal imperial culture, the idea of a woman holding the emperor’s authority challenged convention at the highest political level. Irene had to overcome not only gendered expectations but also intense factional opposition, dynastic conflict, and the enormous moral stigma attached to the violent removal of her son. Her reign from this point forward shaped diplomatic expectations in both East and West and even influenced debates over imperial legitimacy in the Carolingian world. The event remains one of the most dramatic barrier-breaking transitions in medieval political history.