Cyrus (Greek, Κύρος, Kyros) was Ecumenical Patriarch of Constantinople from 705 to 711. He is considered a saint by the Orthodox Church and the Catholic Church, whose feast day is January 7 in the Catholic Church and January 8 in the Orthodox Church.
He was a monk in Amastris, a city of the Euxine (Panflagonia), and in 705 he gained the confidence of the Emperor, as his prediction about the return of Justinian II, deposed by the usurper Leontius, was fulfilled.
Cyrus was named on the patriarchal throne by the Roman emperor Justinian II in 705, as a replacement for the deposed patriarch Calinic. In his pontificate, he exerted influence on the Emperor by moderating his revenge, and thanks to his management Constantinople was visited by Pope Constantine between October 710 and 711. After the fall of Justinian II in December 711, was dismissed by the new Emperor Filípico putting in its place like patriarch to Juan VI, its secretary, who shared the monotelitas sympathies of Filípico. He died in exile.
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