According to historians Gyula Kristó and János Karácsonyi, Nicholas fought in the Battle of Rozgony on 15 June 1312, where the Aba dominion was annihilated. On 8 July 1312, he was a member of the king's inner council which convened in Sárospatak, a former centrum of the Abas' province. According to a royal charter, Nicholas moved to Buda by 1 August 1313, where, alongside Palatine James Borsa and Treasurer Dominic II Rátót (Nicholas' maternal cousin), judged in the name of king over Judge royal John Csák, who betrayed Charles and became a partisan of his distant relative Matthew III Csák.