Jovan Dejanović, known as Jovan Dragaš, was a Serbian nobleman that held the title of despot under the Serbian Emperor Uroš V, his cousin. He later became an Ottoman vassal after the Battle of Maritsa in 1371.
His father, despot Dejan ruled... Wikipedia
Born: 1343, Serbian Empire
Died: 1378 (age 35 years)
Parents: Dejan and Teodora-Evdokija
Great-grandparents: Stefan Milutin, Helena Doukaina Angelina, and John Palaiologos