in Thessaly and Epirus. In 1356 Nikephoros entered Epirus and forced Simeon Uroš to flee to Kastoria. There Simeon proclaimed himself "Emperor of Serbs and Greeks" in rivalry with his nephew Stephen Uroš V. Although he was supported by some important magnates like Jovan (the brother of Stephen Dušan's widow), Simeon was rejected by the nobility of the Serbian lands and Macedonia. After he was forced to retreat from his attempt to invade Zeta (modern Montenegro) in 1358, Simeon Uroš gave up hope of asserting himself in Serbia. The next year, however, Nikephoros II Orsini was killed in a skirmish against Albanian clans, opening an opportunity for Simeon Uroš. Consequently, he rapidly swept into Thessaly and was acknowledged as its ruler in 1359. He then invaded Epirus, where the towns, harried by the Albanian clans who had taken over the countryside, also recognized his authority. He also used his maternal maiden name, Palaiologos (Παλαιολόγος), during his rule. While Simeon Uroš was in Epirus, Radoslav Hlapen of Vodena (Edessa) attempted to seize Thessaly on behalf of his stepson Thomas Preljubović. Simeon Uroš was forced to cut his losses by recognizing Radoslav Hlapen's conquests, turning over Kastoria to him, and marrying his daughter Maria to Thomas. Hlapen recognized Simeon Uroš's suzerainty in at least some of these lands and provided a buffer between him and the Serbian nobles to the north. Simeon Uroš established himself in Trikala in Thessaly, and spent the remaining decade of his reign in relative peace. He soon recognized two of the Albanian leaders in Epirus, John Spata and Peter Losha, as despotes of Arta and Angelokastron. In 1366 he turned over Ioannina, his last major possession in Epirus, to his son-in-law Thomas, who ruled there as a vassal despot. In Trikala, Simeon Uroš presided over a court including Byzantine, Serbian, and Albanian nobles, but he showed preference for the Byzantine relatives of his wife. He also founded and generously endowed the monasteries of Meteora. He died in 1370. Family By his marriage to Thomais Orsini, Simeon Uroš had three children: John Uroš, who succeeded as Serbian tsar and ruler of Thessaly. Stephen Uroš, prince of Pharsalos, who married a daughter of Francis Zorzi. Maria Angelina, who married Thomas Preljubović, who succeeded as ruler of Epirus. Ancestry References Sources 1370 deaths 14th-century Serbian royalty 14th-century despots of Epirus People of the Serbian Empire Christians of the Crusades Palaiologos