Nicholas is first mentioned as provost of Dömös by his own charter in 1310, during the reign of Charles I of Hungary (his predecessor known only bis his initial "G." last appears in the office in 1297).
In the document, Nicholas narrates that John Kőszegi, whose family ruled almost the whole Transdanubia as oligarchs, stormed and plundered the estates of the Dömös Chapter, also ousting him and his clerics from their landholdings.
However Stephen Máréi ("Bogár"), the castellan of Dombóvár, who was one of the familiares of the Kőszegi family, assisted to reclaim the usurped and confiscated estates in exchange for amount of money.
Nicholas did not appear before the pope in the Roman Curia, but the representative of the king and the chapter of Vác did (canons John and Bogomer, respectively).
Pope Clement instructed Archbishop Thomas to suspend Nicholas from the administration of the bishopric of Vác and to entrust it to a suitable person, while to summon the provost of Dömös before his curia.