[5] The judgment letter of Felician, Archbishop of Esztergom from 1134, which recounts in detail the foundation of the Diocese of Zagreb, also mentions that Julius was present during the act in his capacity as palatine.
Croatian historian Ferdo Šišić rejected Hóman's proposal; he considered the territory of Slavonia belonged to the Kingdom of Croatia before Ladislaus' invasion.
Šišić argued it is possible that Palatine Julius, who was first mentioned in this capacity in 1075 is not identical with that namesake lord, who was present during the foundation of the Diocese of Zagreb.
[2] Nevertheless, Julius retained his influence in the royal court, bearing the honorary title comes, and was also a confidant of Coloman, King of Hungary.
He fought in the siege of Peremyshl (present-day Przemyśl, Poland) and the subsequent battle against the Cumans, where the Hungarian army was soundly defeated.