Thomas of Bosnia
Bosnian king
Stephen Thomas (Serbo-Croatian: Stefan Tomaš/Стефан Томаш, Stjepan Tomaš/Стјепан Томаш; c. 1411 – July 1461), a member of the House of Kotromanić, reigned from 1443 until his death as the penultimate king of Bosnia.
An illegitimate son of King Ostoja, Thomas succeeded King Tvrtko II, but his accession was not recognized by the leading magnate of the Kingdom of Bosnia, Stjepan Vukčić Kosača. The two engaged in a civil war which ended when the King repudiated his wife, Vojača, and married the insubordinate nobleman's daughter, Catherine. Thomas and his second wife, both raised in the Bosnian Church tradition, converted to Roman Catholicism and sponsored construction of churches and monasteries throughout the kingdom.
Throughout his reign, Thomas waged a war with the Serbian Despotate over the lucrative mining town of Srebrenica and its surroundings, in addition to (or in conjunction with) multiple conflicts with his father-in-law. Moreover, he had a tense relationship with the menacing Ottoman Empire. After years of skirmishes and raids, Thomas appeared willing to lead the Christian coalition against the Turks, but received no assistance from fellow Christian rulers. Having failed to expand into Croatia proper, Thomas turned again to the east in 1458, arranging a match between his son Stephen and the Serbian heiress Helena. Bosnian control over the remnants of the Serbian Despotate lasted merely a month before the Ottoman conquest of the state.
The public source identifies “Thomas of Bosnia” as bosnian king. This brief keeps that definition visible, then builds a research path around Thomas, Bosnia and Bosnian.
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Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Sep 8, 2026. The linked authority identifier is Q560010. VIAF identifies the subject as 42646287. 2 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1411, 1461, 1443 and 1458.
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This entry incorporates text from “Thomas of Bosnia” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.