III at the end of 1297. The younger brothers Andrew, Ivánka and Nicholas picked fight against the rebellious baron, also representing the monarch's interests, who excused them from all the damage caused to the Csák brothers, Matthew and Csák, and their familiares. After a one-year effective ceasefire, the conflict has recurred between Andrew III and Matthew Csák by the second half of 1299. Following a failed royal campaign led by Demetrius Balassa against the Csák territory, the oligarch's troops invaded the central parts of Upper Hungary. According to a later 14th-century source, Andrew and Ivánka were killed in the skirmish. References Sources 1299 deaths 13th-century Hungarian people Ivanka 03 Medieval Hungarian soldiers Hungarian military personnel killed in action