Duke of Saint Sava

Duchy of Saint Sava Војводство Светог Саве
Ottoman vassal (1435–1444) Aragonese vassal (1444–1466) Ottoman vassal (1469–1483) of present-day Herzegovina
← 1435–1483 →
Flag Coat of arms
War in Zeta (1441–1444). Duchy of Stephen Vukcic Kosaca annexed Upper Zeta. Conquered the city of Bar, with the fortress (now Old Bar) in Lower Zeta.
Historical era		Medieval
•	Start of rule	1435
•	Disestablished	1483

Duchy of Saint Sava (Latin: Ducatus Sancti Sabae,Serbo-Croatian: vojvodstvo Svetog Save, војводство Светог Саве) was a late medieval state which existed amid the Ottoman conquest of the Balkans. It was ruled by Stjepan Vukčić and his son Vladislav, of the Kosača noble family, and included parts of modern-day Bosnia & Herzegovina, Croatia, Montenegro and Serbia.

Stjepan titled himself "Vojvoda of Saint Sava", after the first Serbian Archbishop, Saint Sava. Vojvoda in German translation is Herzog ("duke"), and this would later give the name to the present-day region of Herzegovina, as the Ottomans used Hersek Sancağı ("Sanjak of the Herzog") for the province which was transformed into an Ottoman sanjak.

In a document sent to Holy Roman Emperor Frederick III on 20 January 1448, Stephen Vukčić Kosača styled himself "Vojvoda (duke, herzog) of Saint Sava" (Vojvoda svetog Save), "lord of Hum and Primorje" (gospodar Humski i Primorski), and "Grand Duke", and forced the Bosnian kingdom to recognize him as such. The title "Vojvoda of Saint Sava" had considerable public relations value, because Sava's relics, which were located in Mileševa, were consider miracle-working by people of all Christian faiths in the region.

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Wikipedia