Desiderius Hédervári de Világosvár (; killed 12 November 1330) was a Hungarian medieval nobleman and édervásoldier, one of the first members of the prestigious Hédervári family. He held important positions in the queenly court since the 1320s. He sacrificed himself protecting King Charles I in the Battle of Posada.
Career
Early activity
Desiderius descended from the Hédervár branch of the gens (clan) Héder, as the son of Denis (III) "the White-headed". He had two brothers, Nicholas (II) and Andrew, who died in 1330 and 1326, respectively. Desiderius first appears in contemporary records in 1285, when acquired the village of Bodak, which laid in the area between Danube and Csiliz creek in Győr County (present-day Bodíky in Medzičiližie, a southern sub-region of Žitný ostrov in Slovakia). Since the early 1280s, the Héderváris' distant relative, the powerful Kőszegi family gradually extended their influence over Western Transdanubia, including Győr and Pozsony counties, where the majority of the Héderváris' lands had laid. It is plausible that Desiderius and his brothers were also subjugated by the unscrupulous oligarch Ivan Kőszegi, who forced several local nobles to join his allegiance and enter his service.
His activities in the coming decades – including the era of interregnum (1301–10) and the subsequent unification war (1310–23) against the oligarchs – are unknown. When Charles I of Hungary waged war against the Kőszegis in 1316, Desiderius was among those familiares, who left the allegiance of Andrew Kőszegi and swore loyalty to the king. It is uncertain, whether the Hédervári brothers actively participated in the royal campaign in Transdanubia, nevertheless Andrew Kőszegi sent his mercenaries to pillage and burn their possessions. Temporarily, Desiderius lost all of his estates, "risking his entire fortune" for the monarch. Thereafter, he could hope the recovery of lost family landholdings only from a successful restoration of the strong royal power. After Charles I defeated the Kőszegis by the autumn of 1317, Desiderius was granted the villages of Sérc and Szil near Lake Neusiedl (Fertő) in Sopron County as a compensation for his material losses and loyal service in September 1317 (present-day Schützen am Gebirge and Rust in Burgenland, Austria, respectively).
Court positions
After the fall of James Borsa and his clan's oligarchic province, Desiderius was made ispán of Zaránd County and castellan of Világos Castle (today ruins in Șiria, Romania) in 1318. He retained both offices until his death, as a result he appeared in contemporary documents with the suffix "de Világosvár" throughout his remaining life. He also served as castellan of Kapuvár for a brief time in 1318. Charles I donated the land of Győrság in Győr County to Desiderius in that year.
Desiderius entered the queenly court of Elizabeth of Poland – Charles' third or fourth wife – by March 1321, when he was first styled as equerry (Master of the horse) to the queen. He also served as Judge of the Queen's Court since February 1323, which was the most prestigious position in the queenly household. He held both dignities until his death. Nevertheless, Desiderius remained a confidant of Charles I, there is no record of his any activity relating Queen Elizabeth or her interests. With his positions, Desiderius became a member of the government elite, albeit as one of its insignificant officials. He was one of the signatory barons in that document in April 1323, when Frederick the Fair and his brothers renounced Pressburg (now Bratislava in Slovakia), which they had controlled for decades, in exchange for the support they had received from Charles against Louis IV, Holy Roman Emperor in the previous year. Desiderius frequently resided in the new capital Visegrád thereafter.