Kyros of Constantinople was an Eastern Orthodox priest who served as the Ecumenical Patriarch of Constantinople between 705 and 711. He ascended to the patriarchal throne during the reign of Emperor Justinian II, who appointed him to succeed the deposed Callinicus I. Following the downfall of Justinian II in late 711, Kyros was succeeded by Patriarch John VI under the rule of Emperor Philippicus.
Life and career
During his tenure in the Byzantine Empire, Kyros held the highest ecclesiastical office in the capital. His leadership began when Justinian II placed him in power to replace his predecessor. However, his time in office ended when the political landscape shifted after the emperor's fall, leading to the appointment of a successor who shared the sympathies of the new ruler, Philippicus.
Veneration
Recognized as a saint, Kyros is honored within both the Catholic and Eastern Orthodox traditions. The liturgical calendars of these churches observe his feast day on January 7 in the Catholic Church and on January 8 in the Orthodox Church.