Attested in the sources from 1366 to 1369. The sources refer to him as a κῦρ, δοῦλος and οἰκεῖος of the Serbian Despot Ioan Uglješa (Ioannes Unklesis). The sources describe him as θαυμαστός, σοφός, σοφώτατος and φιλαλήθης. He judged in a court as καθολικὸς κριτής in 1366 at Serres. He was an ὄτροκος (enforcement officer). He was a Greek (ἄνδρα Ῥωμαίον). He attended the trial between thr Hilandar Monastery and Georgios Isaris (ἀλλὰ δὴ καὶ τὸν σοφώτατον κυρὸν Νικήταν τὸν Πεδιάσημον). He together with other members of the court ruled in favor of the Hilandar Monastery and signed the charter, which was issued in October 1366 (ὁ δοῦλος τοῦ ἁγίου μου αὐθέντου τοῦ πανευτυχεστάτου δεσπότου Νικήτας † ὁ Πεδιάσημος). He was sent by the Serbian Despot Ioan Uglješa (Ioannes Unklesis) to the Metropolitan of Thessalonica in order to secure the testimonies of competent witnesses in the case of the questionable land, which belonged to the Sarabare Monastery (ἀπέσταλκεν αὕτη τὸν οἰκεῖον τῆ βασιλεία μου κὺρ Νικὴτα τὸν Πεδιάσιμον ὡς φιλαλήθη εἰς τὴν Θεσσαλονίκην). Niketas completed the task and reported to the despot that the land was an eternal property of the Zographu Monastery (Ταῦτα ἐπανελθόντος εἰς τὴν βασιλείαν μου τοῦ οἰκείου ταύτη κὺρ Νικήτα τοῦ Πεδιασίμου καὶ ἀναγγείλαντος ταύτη, διορίζεται ἡ βασιλεία μου διὰ τοῦ παρόντος δικαιωτηρίου αὐτῆς ὁρισμοῦ, χρυσοβούλλου δύναμιν ἔχοντος, ἔχειν τὴν τοῦ Ζωγράφου σεβασμίαν μονὴν πᾶσαν τὴν ἐν τῶ Ἱερισσῶ γῆν). He delivered the horismos, which was issued by the despot in February 1369 on this occasion, to the monks of the Zographou Monastery (καὶ ὁ παρὼν ὁρισμὸς τὴς βασιλείας μου, χρυσοβούλλου δύναμιν ἔχων, ἀποσταλέντος παρὰ ταύτης σὺν αὐτῶ, ὡς ὀτρόκου, τοῦ ῥηθέντος οἰκείου τῆ βασιλεία μου κὺρ Νικήτα τοῦ Πεδιασίμου, ἐφ ὧ παραδοῦναι τὴν ῥεθεῖσαν γῆν τῆς νῦν ἐν Ἱερισσῶ πρὸς τοὺς Ζωγραφίτας).