Members of the Branković dynasty were known for their devotion to Eastern Orthodox Christianity, and Jovan Branković also represented that family tradition. His cult began in the first half of the 16th century. He was buried at the Krušedol monastery, and laid together with the rest of his family members, in coffins at the altar. During the Austro-Turkish War (1716–1718), a Turkish army invaded Syrmia in 1716, captured Krušedol monastery and burned the holy relics, shortly after the Battle of Petrovaradin. Only some minor parts of the relics were preserved.