Some speculate that his stance was motivated by a desire to become pope, and that he hoped that after his election he would be able to reverse all the damage he had caused;[6] others, that he put the elimination of the Western Schism over the good of his country.

[4] Upon his return to Poland, Trąba was faced with many challenges, among them the accusation of treason, especially from the angry nobility (szlachta) eventually, he succeeded in clearing his name; ironically, he was defended by his rival, whom he had criticized at Konstanz, Archbishop Jan of Rzeszów.

[6] He ordered the creation of the manuscript Cronica conflictus Wladislai regis Poloniae cum cruciferis, Anno Christi 1410,[8] and promulgated the Statutes of Trąba in 1420.

[4] While on a diplomatic mission to Sigismund, Holy Roman Emperor,[2] he died on 2 July 1422 in Hungary; his body was brought back to Gniezno by the knight, Jan of Tuliszków.

On 22 April 2017 the postcard Cp 1772 "600th anniversary of the Primate in Poland" was issued by Poczta Polska, which in the illustrative part shows Archbishop Mikołaj Trąb, according to a graphic from the catalog of Jan Długosz, from the collection of the National Library in Warsaw.