A remarkable intellectual, he was a beneficiary of a sound education, first at the Romanian gymnasium in Șcheii Brașovului where his father was the archpriest of St. Nicholas Church.
[1] In July 1761, Maria Theresa signed a decree appointing bishop Dionisije Novaković to his post in Transylvania; at the same time, he kept his office in Buda.
The following year (1762), the empress issued a new decree of toleration, this time accompanied by eleven conditions meant to facilitate conversion to Greek Catholicism.
During one of his absences, the building was taken over by the head of the local post office, forcing the bishop to move to a three-room peasant house in Rășinari that still stands.
[2] Later, Eustatievici served as secretary of the new vicar Ioan Popovici, an archpriest in Hondol, Hunedoara County, who held the post for ten years until 1784.