Vuk Kosača

Vuk (Cyrillic: Вук; 1317–1359), also called Hran, was a powerful magnate in service to the Serbian king Stefan Dušan (r. 1331–55). Vuk was the progenitor of the Kosača family, later influential in the Kingdom of Bosnia in the late 14th- and first half of the 15th century.

Ragusan chronicler Mavro Orbini (1563–1614), write that Vuk was born in 1317, as son of an unnamed knez (count, knyaz) from Rudine. After an incident during the two families' hunting trip in Upper Drina, where both had possessions, in which Branko Rastislalić lost his life sometime after 1351, Vuk, being responsible for Branko's death, fled to Hungary. After reconciling with the relatives of Branko, he joined (or returned to) the court of Emperor Stefan Dušan. Nevertheless, a member of the Rastislalić family eventually took revenge on Vuk, and murdered him in Rudine in 1359.

Vuk distinguished himself in the military of the emperor, for which he was awarded land around Rudine,, which was located somewhere in Upper Drina area, in eastern Bosnia (present-day Bosnia and Herzegovina). Vuk's son, Vlatko (fl. 1388–d. 1392), was a celebrated military commander in the service of Bosnian king Tvrtko I. He also had another son, Hranja.