Ioannes 460 was priest and hegoumenos of the monastery of Kathara, he is mentioned in four letters of Theodoros 15 (Theodore the Stoudite), written in 816 and 817: Theod. Stud., Epp. 267, 271, 272, 365. He was a supporter of the veneration of icons and was one of the joint signatories of two letters written by Theodoros 15 to the bishop of Rome, Paschalis 5, on behalf of the iconophile party: Theod. Stud., Epp. 271, 272 (Ἰωάννης πρεσβύτερος καὶ ἡγούμενος τῶν Καθαρά). He is mentioned but not by name in one of Theodoros 15's sermons as one of the hegoumenoi who remained orthodox (i.e. true to the veneration of icons) but who had accepted a compromise with the iconoclasts in order to protect his monastery: Theod. Stud., Catech. Parva 92 (p. 315 Auvray). As a young man he attended the Council of Nikaia in the company of the later hegoumenos of the monastery of Dalmatou (cf. Anonymus 676 and Hilarion 1); later he was made hegoumenos of the monastery of Kathara by Theodoros 15; he suffered imprisonment or exile during the persecution under Leo V (Leo 15); he died on 27 April probably in 835 (and was probably born in c. 770): Synax. Eccl. Const. 631-634.

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