Name Tenure Conferred by Notes Refs Jovan Oliver 1334–1356 Andronikos III Palaiologos Autonomous Serbian magnate, named despot by Andronikos III after the Byzantine-Serbian peace agreement of 1334 [99] Simeon Uroš 1345/1346–1363 Stephen Uroš IV Dušan Half-brother of Stephen Dušan, he was named despot probably after Dušan's coronation as emperor.