Initially a chancellor to king Jadwiga of Poland and one of the advisors to the king Władysław, on 26 April 1399 he was ordained an archbishop of Gniezno and hence Primate of Poland.
He held positions as a chancellor to King Jadwiga of Poland and advisor to King Władysław before being appointed Archbishop of Gniezno and thus becoming the Primate of Poland on April 26, 1399.