He was titular Duke of Opava and canon of Wrocław, Olomouc and Vienna, as well as Provost of the St. Othmar parish in Mödling.
His parents were Duke William of Opava and Salome, a daughter of the Bohemian nobleman Půta III of Častolovice.
During the winter semester of 1471, Przemko III studied at the University of Vienna, where he probably received his bachelor's degree.
He received this appointment from Emperor Frederick III, together with an apartment at the ducal court, where he lived for the rest of his life.
Although he had been financially ruined by the destruction in the Duchy of Opava, his university degree made him one of the more outstanding and accomplished Moravian and Silesian noblemen of his time.
Ecclesiarum canonicus plebanus hic in Medling atque decanus Wienne Austrie, cuius anima vivat Deo.