Saint Stephen the Younger (Greek: Ἂγιος Στέφανος ὁ νέος, Hagios Stephanos ho neos; 713/715 – 28 November 764 or 765) was a Byzantine monk from Constantinople who became one of the leading opponents of the iconoclastic policies of Emperor Constantine V (r. 741–775).
He visited Constantinople again for his father's funeral some years later, and brought his mother and sisters to the convent of Mt.
He refused to accept the decisions of the iconoclast Council of Hieria (754), but it was not until circa 760 that he began suffering persecution: he was accused of sexual relations with his mother, and of illegally tonsuring George Synkletos, a favourite of the Emperor Constantine V.[2][4] Some modern scholars, however, reject the conventional story whereby Constantine's persecution of monks was a result of the latter championing the cause of the iconophiles.
Consequently, the persecution of Stephen may have had more to do with his popularity and strong advocacy of monasticism, rather than his active opposition to iconoclasm as reported in his Life.
In his second year of exile (circa 764), he was brought to the Phiale prison in Constantinople, and was questioned by the emperor himself.