Ladislaus IV of Hungary (Hungarian: IV. (Kun) László, Croatian: Ladislav IV. (Kumanac), Slovak: Ladislav IV. (Kumánsky); 5 August 1262 – 10 July 1290), also known as Ladislaus the Cuman, was King of Hungary and Croatia from 1272 to 1290. His mother, Elizabeth, was the daughter of a chieftain from the pagan Cumans who had settled in Hungary. At the age of seven, he married Elisabeth, a daughter of King Charles I of Sicily. Ladislaus was only 9 when a rebellious lord, Joachim Gutkeled, kidnapped and imprisoned him.
Ladislaus was still a prisoner when his father Stephen V of Hungary died on 6 August 1272. During his minority, many groupings of barons – primarily the Abas, Csáks, Kőszegis, and Gutkeleds – fought against each other for supreme power. Ladislaus was declared to be of age at an assembly of the prelates, barons, noblemen, and Cumans in 1277. He allied himself with Rudolf I of Germany against Ottokar II of Bohemia. His forces had a preeminent role in Rudolf's victory over Ottokar in the Battle on the Marchfeld on 26 August 1278.
However, Ladislaus could not restore royal power in Hungary.
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