Probably identical with an adressee (PLP 5670) of a letter, which was written by Theodoros Hyrtakenos. Mentioned in the sermon of the Byzantine writer Theodoros Metochites, who undertook the task to arrange the marriage of the Byzantine princess Simonis with the Serbian King Stefan Uroš II Milutin. He accompanied Theodoros Metochites on his diplomatic mission and reported the news to the Byzantine Emperor Andronikos II. (ἄλλως τε καὶ πρὸς εἰδότα ἴσως καὶ ἅπαντ’ ἀκριβῶς ἀκηκοότα τοῦ καλοῦ Δουκαίτου· πρότερον ἐπιδεδημηκότος αὐτόθι παρ’ ἡμῶν...κἀγὼ μὲν αὐτίκα τὸν καλὸν Δουκαίτην ἐς βασιλέα· καὶ αὐτὸς δὲ οὕστινας οἶσθα, σὺν αὐτῷ πέμπομεν, Δαμιανόν τινα αὐτὸν οἶμαι ὄνομα μοναχὸν καὶ Τομπράιλον ἐκκλησιάρχην ἐνταῦθα τοῖς ἐγχωρίοις τετιμημένον τοῦ δεσπότου καὶ κατωνομασμένον· περί τε τοῦ παντὸς ἔργου κατεροῦντας ὡς ἤνυσταί τε καὶ πεπέρανται· καὶ καταλιπαρήσοντας ἐξ αὐτοῦ δεσπότου τὲ καὶ Τριβαλλάρχου, καὶ ἤδη παιδὸς φίλου τῷ βασιλεῖ, περὶ οὗ νῦν γε εἴρηται συνθήματος).