[8] As the Duke of Slavonia was considered traditionally the heir apparent to the Hungarian throne since the second half of the 12th century, Stephen accused his father of planning to disinherit him in favor of his eleven-year-old younger brother, Béla, because of the emerging tensions between the monarch and his elder son.

In the Peace of Pressburg, the two divided the country along the Danube: the lands to the west of the river remained under the direct rule of Béla, and the government of the eastern territories was taken over by Stephen, the king-junior.

The latter county belonged to Stephen's sphere of influence in accordance with the Peace of Pressburg, which was thus violated by Béla IV with this donation.

Pope Urban IV instructed Philip Türje, Archbishop of Esztergom and Paul Balog, Bishop of Veszprém to defend Duke Béla's interests.

[12] According to historian Attila Zsoldos, Béla IV – having secured himself on several fronts – confronted with his elder son at the event, which made a large-scale civil war inevitable in Hungary.

In contrast, Attila Zsoldos considers, the king alone organized the meeting to Esztergom in September 1267, and was merely mobilization and preparation for a next war against Duke Stephen.

Only Duke Béla attended the event, where – as Zsoldos claims – the mobilized royal servants were not enthusiastic about another internal war, instead they demanded the recognition of their rights and privileges from the monarch, and the name of the absent Stephen was included in the charter at their request.

[17][18] Duke Béla granted the eponymous domain of Gara in Valkó County (now Gorjani in Croatia) to brothers John and Stephen Dorozsma, ancestors of the powerful Garai family in April 1269.

[19] He was betrothed to Kunigunde of Ascania, daughter of Otto III, Margrave of Brandenburg,[20] in 1261, after Béla IV and his long-time rival Ottokar II of Bohemia concluded a peace following the Battle of Kressenbrunn.

[23] The event was reported in detail by Ottokar aus der Gaal's Steirische Reimchronik ("Styrian Rhyming Chronicle") written in the early 14th century.

[22] According to the narration of the chronicle with dubious authenticity, when a knight's tournament (buhurt) took place, the Hungarians misunderstood the situation and left the ceremony prematurely, including the newlywed husband Béla.