Career
After the death of despot Jovan Branković (1502), Vladislaus II of Hungary made Ivaniš Berislavić the interim despot of Serbia. In addition, their estates shared borders, and despot Đorđe Branković as well as Jovan had been supporters of Mathias Corvinus just like the Berislavićson Nevertheless, the decision was apparently not welcomed in Serbia, where the local chroniclers would not mention Ivaniš Berislavić by name, likely because they had expected the privilege to pass to the Serbian House of Jakšić, who were also in service of the Hungarian king.
The marriage itself was postponed until May 1504 because of Jelena"s illness.
Ivaniš was put as protector of the Orthodox Church in Hungary, and in the charters he signed as "In God"s Grace, the Despot of Serbia". The defence of the southern border of the Kingdom of Hungary was handled by Berislavić as despot, with support of Stevan, Marko and Petar Jakšić, Stjepan Bradač, and the armed forces of Belgrade and Šabac.
Berislavić received the former appanage of Jovan, which the Hungarians had confiscated with his death. His residence was at Kupinik, in Srem.
Berislavić was also named the "Ban of Jajce" in 1511, replacing Baltazar Alapić.
He took an oath to secure the southern borders of Hungary and being loyal to his people. He also had a seat at Brod on the Sava, from where he viewed his cities in Srem and Slavonia, including Jajce Banovina. Because his duties involved a significant effort as well as financial cost, he repeatedly asked the Hungarian King to remove him from service as Ban of Jajce in 1513, and the King complied on May 25.
