Vučina was a 12th-century Serbian

Serbs

The Serbs are a South Slavic ethnic group of the Balkans and southern Central Europe. Serbs are located mainly in Serbia, Montenegro and Bosnia and Herzegovina, and form a sizable minority in Croatia, the Republic of Macedonia and Slovenia. Likewise, Serbs are an officially recognized minority in...

 Duke (жупан, župan

Zupan

Żupan was a long garment, always lined, worn by almost all males of the noble social class in the Polish-Lithuanian Commonwealth, typical male attire from the beginning of the 16th to half of the 18th century, still surviving as a part of the Polishnational dress.- Derivation :The name żupan has...

) under the Rascia

Rascia

Rascia was a medieval region that served as the principal province of the Serbian realm. It was an administrative division under the direct rule of the monarch and sometimes as an appanage. The term has been used to refer to various Serbian states throughout the Middle Ages...

n Grand Prince

Grand Prince

The title grand prince or great prince ranked in honour below emperor and tsar and above a sovereign prince .Grand duke is the usual and established, though not literal, translation of these terms in English and Romance languages, which do not normally use separate words for a "prince" who reigns...

 Uroš II Prvoslav

Uroš II Prvoslav

Uroš II, also known as Primislav was Serbian Grand Prince from ca. 1145 to 1162, with brief interruptions as ruler by Desa, his brother. His rule was characterized by a period of power struggle, not only of the Serbian throne between the brothers, but between the Byzantine Empire and Hungarian...

.

In 1150 he was one of the military commanders in the army of Uroš II that fought the Byzantine Empire

Byzantine Empire

The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

, the combined Serbo-Hungarian army suffered defeat at the Battle of Tara

Battle of Tara (1150)

In 1150, Grdeša and Vučina were the military commanders in the army of Uroš II that fought the Byzantine Empire, the combined Serbo-Hungarian army suffered defeat at the Battle of Tara, where Grdeša and fellow Duke Vučina where captured. It is assumed the prisoners were taken to Sredets , but are...

, where he and his fellow nobleman Grdeša

Grdeša

Grdeša or Grd was a 12th-century Serbian Lord of Trebinje under the Rascian Grand Prince Uroš II Prvoslav.It is believed he was born around 1120...

 (of Trebinje

Trebinje

Trebinje is the southernmost municipality and town in Bosnia and Herzegovina. It is administratively part of the Republika Srpska entity and is located in southeastern Herzegovina, some from the Adriatic Sea....

) where captured. It is assumed the prisoners were taken to Sredets

Sredets

Sredets is a town in southeastern Bulgaria, part of Burgas Province, located in the proximity of Lake Mandrensko and the northern slopes of Strandzha. During the Ottoman rule it was known as Karabunar and later as Grudovo ....

(Sofia), but are released in 1151.