He was born into the so-called Ernye branch of the gens Ákos as the eldest son of Mojs I, who served as Count of the Székelys, then Master of the treasury in the Queen's court.
He had two siblings, a brother Ellős (Achilles), who supported his efforts during King Charles' unification war, and a sister, who married a certain Andrew Sárpataki.
[1] Historian Attila Zsoldos argued Sárpataki is identical with that Andrew, son of Ipoch from the gens Bogátradvány, whose landholdings in Doboka, Kolozs and Torda counties were confiscated and donated to Thomas Szécsényi by Charles I for his "treachery", as he was a strong supporter of the late Voivode Ladislaus Kán and his family.
Historian Pál Engel, who first attempted to reconstruct the order of events in his 1988 study, argued the peace between Charles and the Borsas has collapsed by the first half of 1316.
[14] However historian Attila Zsoldos, who also examined the contents of Nicholas Pok's charters, in addition to the dates and locations, challenged Kristó's interpretation in 2016.
He argued, if, as Kristó considered, Nicholas Pok arrived to prepare a war to Transylvania immediately after his appointment, he would not have dealt with insignificant estate affairs in his diplomas as he did.
Zsoldos considered, the 1318 charter, which narrated the Voivode's appointment and the following events, twisted the years and Mojs was declared the king's enemy retroactively.
His military leaders captured several castles of Peter, son of Petenye in Zemplén County in the following months, who sought refuge in the court of Mojs Ákos after that.
Thus one of the staunchest supporters of the King, Dózsa Debreceni, who successfully waged war against the oligarchs in the previous years, was appointed Voivode of Transylvania in the summer of 1318.
At Zilah (today Zalău, Romania), he summoned the Transylvanian noblemen to join his army and ordered the postponements of all incumbent lawsuits in the province.
Mojs and his militia tried to prevent Debreceni to advance into the inner parts at Topa, midway between the Meszes Gate and Kolozsvár (today Cluj-Napoca, Romania), but suffered a heavy defeat.
His allies, who lost their powers by then, James Borsa and Peter, son of Petenye were also involved Mojs' army, in addition to Saxon auxiliary troops.
[26] Finally, in early 1320, Mojs and his brother Ellős were killed in a battle at Bonchida (today Bonțida, Romania) by a royal army led by Stephen Losonci, a former Count of the Székelys.
[29] Attila Zsoldos rejected Kristó's theory as Ellős was mentioned as a living person in March 1319, when Thomas Losonci (brother of Stephen) forbade him to hand over his estate of Bonyha (today Bahnea, Romania) to his relative Nicholas Ákos, castellan of Kecskés.
[32] However Attila Zsoldos emphasized the Transylvanian Chapter functioned continuously throughout the year, in addition to courts and places of authentication, which proves there was peace in the province in 1319.
He argued, Mojs lost his influence and sense of initiative after Battle of Topa, and after months of chase, Losonci's small unit put an end to his insurgency at Bonchida.
[34] According to Gyula Kristó, Mojs Ákos became a serious aspirant to become a so-called "provincial lord", who "cleverly exploited that political vacuum, which was emerged in Transylvania and the surrounding areas after the death of Ladislaus Kán".
[35] Pál Engel claimed Görgény Castle (today Gurghiu in Romania) possibly functioned as the provincial seat of Mojs' territory,[36] as Attila Bárány also shared this view.