On June 2, 1941, Franjo Sudar's Ustaše attacked the Udrežnje village and killed 27 people of the Vujadinović, Vukosav, Draganić, Gambelić, Kljakić, Šipovac and Šakota families.
Vujadinović holds a Bulgarian passport (and consequently EU citizenship) due to his grandfather Velichko being a Bulgarian from Pirot.