Mentioned in the chrysobull charter from 1300 issued by the Serbian King Stefan Uroš II Milutin for the Monastery of Saint George-Gorg near Skopje. Probably a courtier of the Serbian King Stefan Uroš II Milutin. He was in the commission for the renovation of the charter for the Monastery of Saint George-Gorg near Skopje. Milutin asked the scribe Dabiša to compile the byzantine, bulgarian and serbian documents for the monastery into a new chrysobull charter. The task of Nikola Ōpareša in the commission is unclear. It seems that Nikola controlled the text and helped Dabiša to read the old and almost destroyed documents (I blagovolihь ō nihь, i umolь čьstьnago igumena Svetyje Bogorodice Lavri studeničьskie Savu i Nikolu Ōparešu i dijaka kraljevьstva mi Dabišu, emu že reče kraljevstvo mi ta vsa svojeju rukoju ispisati těhь vsěhь vethyhь na sii novy hrisovulь).