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Stjepan Vukčić Kosača

Stjepan Vukčić Kosača

Bosnian duke
The basics
Quick Facts
Intro Bosnian duke
Gender male
Birth 1 January 1404
Death 1 January 1466
Father: Vukac Hranić
Children: Vladislav HercegovićCatherine of BosniaHersekzade Ahmed PashaVlatko Hercegović
Stjepan Vukčić Kosača
The details

Stjepan Vukčić Kosača (Serbian Cyrillic: Стјепан Вукчић Косача; 1404–1466) was the most powerful and for the most part unruly vassal in the Kingdom of Bosnia. A member of the Kosača noble family, he became Grand Duke of Bosnia upon the death of his uncle Sandalj. He refused to recognize the accession of King Tomaš, proclaiming himself a semi-independent herzog, recognizing the suzerainty first of the Ottoman Empire, then Aragon and again the Ottoman Empire. Peace was briefly restored by the marriage of King Tomaš and Stjepan's daughter Katarina, but it did not last long.

It was Stjepan's title Herceg of Saint Sava that gave rise to the name of Ottoman sanjak established after 1482 when the Kosača family domain fell under Ottoman rule. The name remained since then and it is used for modern region of Herzegovina (Sanjak of Herzegovina was part of the Bosnia Eyalet, while modern Herzegovina is part of modern Bosnia and Herzegovina), and town of Herceg Novi in present day's Montenegro as well.


Stjepan Vukčić Kosača's offensive into Zeta (1441–44). Podgorica and Medun, in Upper Zeta, and Bar, in Lower Zeta, were conquered.

Stjepan was the son of Vukac Hranić Kosača and his wife Katarina who was a daughter of Hrvoje Vukčić Hrvatinić, as well as the fraternal nephew of Sandalj Hranić, Grand Duke of Bosnia. Along with his father and uncles Sandalj and Vuk, Stjepan was admitted into the nobility of the Republic of Ragusa by a charter dated 29 June 1419. The same charter granted the family a house in Dubrovnik. Sandalj's father died in 1432, and when his uncle followed him on 15 March 1435, it was Stjepan who inherited the lands and prestigious ducal title, becoming the most powerful vassal of King Tvrtko II of Bosnia.

At the end of September 1441, Kosača captured the territory of Upper Zeta on the left bank of Morača. Stefan Crnojević, who represented the whole Crnojević family, joined him in this campaign and was awarded by Kosača with control over five villages.

Civil war

King Tvrtko II died in September 1443. Being a staunch supporter and adherent of the Bosnian Church, Stjepan refused to recognize the deceased king's cousin and chosen heir Thomas (Tomaš), a convert to Roman Catholicism, as King of Bosnia. Instead, Stjepan supported Thomas' exiled brother Radivoj, a candidate also put forward by the Ottoman Empire.

In 1443, the Papacy sent envoys to Thomas and Stjepan about a counter-offensive against the Ottomans, but the two were in the middle of a war. Ivaniš Pavlović, sent by King Thomas, attacked Stjepan Vukčić. Thomas had at the same time been recognized by the Hungarian regent John Hunyadi. Stjepan turned to King Alfonso V of Aragon, who made him "Knight of the Virgin", but did not give him troops. On 15 February 1444, Stjepan signed a treaty with the King of Aragon and Naples, becoming his vassal in exchange for Alfonso's help against his enemies, namely King Thomas, Duke Ivaniš Pavlović and the Republic of Venice. In the same treaty Stjepan promised to pay regular tribute to Alfonso instead of paying the Ottoman sultan as he had done until then.

Peace and royal marriage

In 1446 the two rivals had made peace. Stjepan Vukčić recognized Thomas as king, and the pre-war borders were restored. Peace was sealed by the marriage of Stjepan's daughter Catherine (Katarina) and King Thomas in May 1446, with Catherine converting to Roman Catholicism. The Ottomans were displeased with the peace as their interest lay in dividing Bosnia. Serbian Despot Đurađ Branković was also displeased due to the Srebrenica issue. In 1448, the Ottomans sent an expedition to plunder King Tomaš's lands, but they also plundered Stjepan Vukčić's lands. Stjepan Vukčić sent envoys to Despot Đurađ to try to improve the relations between the two. Vukčić then joined forces with Despot Đurađ and fought Bosnian forces.

Renewal of conflict

The same year Stjepan Vukčić assumed the title "Herzog of Hum and the Coast", dropping "Duke of Bosnia". A year later, in 1449, he had changed it into "Duke of Saint Sava", after the Serbian saint whose relics lay in Mileševa in the east of his province. This title had a considerable public relations value since Sava's relics were considered miracle-working by people of all Christian faiths in the region and tied in with a boost of relations between him and Despot Đurađ; that same year a war broke out over the rich mining town of Srebrenica between Despot Đurađ and King Thomas, in which Stjepan sided with Đurađ.

In 1451 Stjepan Vukčić attacked the Republic of Ragusa, and laid siege to the city. As he had earlier been made a Ragusan nobleman, the Ragusan government now proclaimed him a traitor. A reward of 15,000 ducats, a palace in Dubrovnik worth 2,000 ducats, and an annual income of 300 ducats was offered to anyone who would kill him. along with the promise of hereditary Ragusan noble status which also helped hold this promise to whoever did the deed. The threat seems to have worked, as Stjepan abandoned the siege. After King Thomas and Despot Đurađ reconciled, Ragusa proposed a league against Stjepan. Thomas' charter from 18 December 1451, apart from the theoretical ceding of some of Stjepan's territories to Ragusa (he firmly held those), also included the obligation that he would attack Stjepan.

Ottoman threat

Savina Monastery was founded by Stjepan Vukčić Kosača

In the early 1460s, Stjepan controlled of all of today's Herzegovina as far north as Glamoč, except for Nevesinje and Gacko which were under Ottoman control. Stjepan knew he would soon face Ottoman attack so he asked Venice to allow Skanderbeg's forces to cross their territory to help him, which they did, but Skanderbeg failed to carry out his promises. When King Thomas died in 1461, he was succeeded by his elder son Stephen rather than Sigismund, his son by Queen Katarina. This time, aware of the Ottoman threat, Stjepan did not dispute the succession.

After taking the Kingdom of Bosnia in 1463, Mahmud Pasha also invaded Herzegovina and besieged Blagaj, after which Stjepan conceded a truce by sending his youngest son as a hostage to Istanbul, and ceding all of his lands to the north of Blagaj to the Empire.

Stjepan Vukčić died in 1466, and was succeeded by his eldest son Vladislav.

Issue and legacy

Stjepan Vukčić was married three times. In 1424, he married Jelena, daughter of Balša III of Zeta (and granddaughter of his aunt, Jelena Balšić). His wife died in 1453. Two years later, he married Barbara (possibly del Balzo). She died in 1459. His final marriage, in 1460, was to a German woman named Cecilie.

With his first wife Jelena, he had at least four children:

  • Katarina (1424–1478), married King King Tomaš of Bosnia in 1446
  • Vladislav Hercegović (c. 1427–1489), Duke of St. Sava, Lord of Krajina, married Kyra Ana, daughter of Georgios Kantakuzenos in 1455
  • Vlatko Hercegović (c. 1428–1489), Duke of St. Sava, married an Apulian noblewoman
  • Hersekzade Ahmed Pasha (c. 1430–1515), baptized Stjepan; the youngest son of Stjepan Vukčić, whom Sultan Mehmed II took as a hostage, became a Muslim in the Sultan's service. He became the Grand Vizier and Grand Admiral to the Sultan, married Sultan Bayezid II's daughter, Fatima, in 1482; and had descendants by her.

Stjepan and his second wife Barbara had a short-lived son (born in 1456) and a daughter named Mara.

In 1482, Vladislav Hercegović was overpowered by Ottoman forces led by his brother, Hersekzade Ahmed Pasha. Herzegovina was organized into a province (the Sanjak of Herzegovina), which later became one of the sanjaks of the Bosnia Eyalet (1580).

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