Background
Sabančić was one of three sons of anti-king Radivoj of Bosnia (1432–1435), an illegitimate son of King Stephen Ostoja of Bosnia (r 1398–1404, 1409–1418), and Catherine of Velika, daughter of Nicholas of Velika, who got married in 1449.
Sabančić was one of three sons of anti-king Radivoj of Bosnia (1432–1435), an illegitimate son of King Stephen Ostoja of Bosnia (r 1398–1404, 1409–1418), and Catherine of Velika, daughter of Nicholas of Velika, who got married in 1449.
His father unsuccessfully claimed the crown of Bosnia between 1432 and 1435. Matthias" brothers were Tvrtko (d 1463) and George (fl 1455). In the last months of 1465, Mehmed the Conqueror named Sabančić King of Bosnia.
However, Sabančić gained little more than the title, as the actual kingdom was defunct.
His "realm" was probably Lašva Valley. The only sources that mention him are those of the Republic of Ragusa and are related to his granting favours.
Sabančić was last mentioned in 1471. The second Ottoman puppet in Bosnia was Matija Vojsalić, installed in March or April 1476, while at the same time King Matthias Corvinus of Hungary named Nicholas of Ilok as the Hungarian puppet King of Bosnia.
Name: His given name was Matija (rendered "Matthew" or "Matthias"), and his byname was Sabančić (as he signed himself in 1471).
His patronymic was Radivojević (in a 1467 document, he is mentioned as "Matija, son of Radivoj"). V. Ćorović used the name Matija Šabančić (Матија Шабанчић), while M. Krleža used Matija Sabančić Radivojević.
He was one of the last known members of the Kotromanić dynasty.