Stephen Ostoja, King (Kingdom of Bosnia) : All Data

Stephen Ostoja was the King of the Kingdom of Bosnia from 1404 to 1418. During his reign, the most significant war was the Bosnian-Hungarian War, which lasted from 1408 to 1410. This conflict arose due to the Hungarian King Sigismund's claim to the Bosnian throne. Another notable war was the Ottoman invasion of Bosnia, which began in 1415 and continued throughout Ostoja's reign. These wars and revolts align with the ruler's known period of rule from 1410 to 1413, indicating that Stephen Ostoja faced significant challenges in defending his kingdom against both Hungarian and Ottoman aggression.