Brothers' Quarrel (Hungary)

Brothers' Quarrel
Emeric captures his rebellious younger brother Andrew, painted by Mór Than in 1857
Date 1197–1203 Location Kingdom of Hungary (clashes in Slavonia, Transdanubia) (with spillover to Austria and Styria in 1199) Result 1197 (Andrew's victory) 1199 (Emeric's victory) 1203 (Emeric's victory)
Belligerents
Emeric, King of Hungary Supported by: Holy See	Andrew, Duke of Slavonia Supported by: Duchy of Austria (1197–99) Duchy of Merania (1203)
Commanders and leaders
Mika Ják Bishop Ugrin Csák Mog (pre-1199) Benedict Nicholas Julius Kán Vejte Csanád Ipoch Bogátradvány	Ban Andrew Bishop Boleslaus of Vác Bishop Elvin of Várad Abbot John of Pannonhalma Nicholas Martin Hont-Pázmány Mog (post-1199)

The Brothers' Quarrel (Hungarian: testvérviszály) was a war of succession within the Árpád dynasty between Emeric, the King of Hungary, and his younger brother, Andrew, Duke of Slavonia. It lasted from 1197 to 1203, covering almost the entire reign of Emeric. The conflict had a significant impact on the development of the 13th-century society and political system in the Kingdom of Hungary.