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 served as a chancellor to King Jadwiga of Poland and advisor to King Władysław initially. On April 26, 1399, he was elevated to the position of Archbishop of Gniezno and thus became the Primate of Poland.