Radivoj Ostojić was anti-king of Bosnia from 1432 until 1435. He was the older of the two illegitimate sons of King Stephen Ostoja of Bosnia, most likely born during his marriage to Kujava Radinović

Kujava Radinović

Kujava Radinović was the second wife of King Stephen Ostoja of Bosnia and as such she was Queen of Bosnia from 1399 to 1404 and again from 1409 to 1415. She was the daughter of the nobleman Radin Jablanić.-Marriage:...

.

Struggle for the crown

In 1432, Radivoj proclaimed himself King of Bosnia, in opposition to his half-uncle, King Stephen Tvrtko II. Radivoj was supported by the Ottomans, but Bosnian nobility supported Tvrtko. Despite great chances, Radivoj was never universally accepted as a monarch. He sought recognition outside the realm more than inside its borders. After his failure to gain the crown, he was forced to flee Bosnia and to live at the Ottoman court.

Brother's reign

In 1443, Tvrtko II died and Radivoj's younger brother, Stephen Thomas

Stephen Thomas

Stephen Thomas , manufacturer, politician, jurist, and Union Army officer. He was a recipient of the Medal of Honor for gallantry.-Early life:...

, was proclaimed king. In 1445, Thomas was legitimised by Pope Eugene IV

Pope Eugene IV

Pope Eugene IV , born Gabriele Condulmer, was pope from March 3, 1431, to his death.-Biography:He was born in Venice to a rich merchant family, a Correr on his mother's side. Condulmer entered the Order of Saint Augustine at the monastery of St. George in his native city...

; it is not clear if Radivoj was legitimised by the same document.

Marriage and issue

On 2 June 1449, in Buda

Buda

For detailed information see: History of Buda CastleBuda is the western part of the Hungarian capital Budapest on the west bank of the Danube. The name Buda takes its name from the name of Bleda the Hun ruler, whose name is also Buda in Hungarian.Buda comprises about one-third of Budapest's...

, he married Catherine of Velika, daughter of Nicholas of Velika, who brought him some land in Slavonia as her dowry

Dowry

A dowry is the money, goods, or estate that a woman brings forth to the marriage. It contrasts with bride price, which is paid to the bride's parents, and dower, which is property settled on the bride herself by the groom at the time of marriage. The same culture may simultaneously practice both...

. His father-in-law and mother-in-law Margaret left the couple one third of their belongings. Radivoj and his wife hehad three sons:

• Tvrtko (died 1463)
• George (last mentioned in 1455)
• Matthew, installed as puppet king of Bosnia by Mehmed II
  Mehmed II
  Mehmed II , was Sultan of the Ottoman Empire for a short time from 1444 to September 1446, and later from...
  
   in 1465

Nephew's reign

Radivoj was a passionate member of the Church of Bosnia before being forced to convert to Roman Catholicism. When his brother died in 1461, it was rumoured that he was poisoned by Radivoj. Radivoj's nephew, Stephen Tomašević, assumed the crown. In June 1463, the Ottomans besieged Bobovac

Bobovac

Bobovac is a fortified city of medieval Bosnia and Herzegovina. It is located near today's Vareš.The city was built during the reign of Stephen II, Ban of Bosnia, and was first mentioned in a document dating from 1349...

. Hoping to gain Mehmed II

Mehmed II

Mehmed II , was Sultan of the Ottoman Empire for a short time from 1444 to September 1446, and later from...

's mercy, Radivoj surrendered the keys of the town. However, Mehmed was enraged because Radivoj had abandoned his master and ordered his execution. His eldest son and nephew Tomašević were executed with him. His widow remarried.