rumor spreading in the country attributed the 25-year-old monarch's unexpected death to poisoning. Stephen was buried in Esztergom. Family Stephen's betrothal to the daughter of Yaroslav Osmomysl of Halych was broken in 1166. He married Agnes of Austria at the end of the year. From this marriage a son, Béla, was born in 1167, but the child died in the same year. Agnes survived her husband and was pregnant at the time of his death. Her father, who was staying in Hungary when Stephen III died, took Agnes back to Austria. Agnes gave birth to a second son, but his fate is unknown. She later married Herman, Duke of Carinthia. Notes Sources Primary sources Deeds of John and Manuel Comnenus by John Kinnamos (Translated by Charles M. Brand) (1976). Columbia University Press. . O City of Byzantium, Annals of Niketas Choniatēs (Translated by Harry J. Magoulias) (1984). Wayne State University Press. . The Deeds of Frederick Barbarossa by Otto of Freising and his Continuator, Rahewin (Translated and annotated with an introduction by Charles Christopher Mierow with the collaboration of Richard Emery) (2004). Columbia University Press. . Secondary sources 12th-century Hungarian people Kings of Hungary Kings of Croatia House of Árpád Hungarian people of Russian descent Hungarian exiles 1147 births 1172 deaths