It is not clear, if he is the same person as Covac(er), a nobleman of the Serbian King Stefan Uroš IV Dušan, who received two pieces of blankets in the value of 60 perpers as a gift from the Ragusans on 5th July 1336 (donentur Covacero barono domini regis due petie valoris ypp. LX). Mentioned for the year 1342 by the Byzantine historian Ioannes Kantakuzenos. He was one of the dignitaries (οἱ ἐν τέλει πάντες τῶν Τριβαλῶν), who served the Serbian King Stefan Uroš IV Dušan. He was against the handing over of Ioannes VI Kantakuzenos to the Byzantine Empress Anna Palaiologina. He threatened Georgios Lukas and Makarios, the Metropolitan of Thessalonike, who were sent as emissaries by Anna to the Serbian King Stefan Uroš IV Dušan, with death (τις ἐξ αὐτῶν Κοβάτζης ὠνομασμένος φανερῶς ἀντεῖπε καὶ ἠπείλησε θάνατον τοῖς πρέσβεσιν, εἰ μὴ τάχιον ἀπαλλάττοιντο).