"... and the history by Clement (of Alexandria, c.150 - c. 215), in the fifth (chapter) of Hypotyposeis; in which Cefas, the one mentioned by Paul (in the citation): «when Cefas came to Antioch, I confronted him face to face» (Galatians 2:11), it is said he was one of the Seventy Disciples, having the same name with Peter the Apostle". [^ (ἡ δ᾿ ἱστορία παρὰ Κλήμεντι κατὰ τὴν πέμπτην τῶν Ὑποτυπώσεων· ἐν ᾗ καὶ Κηφᾶν, περὶ οὗ φησιν ὁ Παῦλος· «ὅτε δὲ ἦλθεν Κηφᾶς εἰς Ἀντιόχειαν, κατὰ πρόσωπον αὐτῷ ἀντέστην», ἕνα φησὶ γεγονέναι τῶν ἑβδομήκοντα μαθητῶν, ὁμώνυμον Πέτρῳ τυγχάνοντα τῷ ἀποστόλῳ.)]
Great ~ thanks.