Héder was appointed ispán of Hont County sometime after 1267, when his predecessor Peter Balassa is last mentioned in this capacity. Héder is referred to as ispán only once in 1269. In that year, Héder bought the lands Bős (today Gabčíkovo, Slovakia) and Árpádsoka, originally belonged to the castles of Szolgagyőr and Pressburg, respectively, for 70 silver marks from miles (knight) Nicholas, son of Peter, who was granted these lands for his loyalty from King Béla IV of Hungary and Queen Maria Laskarina sometime after 1264. Both estates originally belonged to the property of Lothard Gutkeled, who supported Duke Stephen in his armed rebellion against his father Béla IV. The neighboring lords – his relatives Henry Kőszegi, Henry's familiaris James (I) Héder, the original owner Lothard Gutkeled and Bökény Hont-Pázmány – objected against the purchase. Béla IV and his court, consisted of four powerful barons of the realm (Maurice Pok, Lawrence Matucsinai, Lawrence Aba and Csák Hahót), dismissed the lawsuit and confirmed the sale transaction still in that year. Nicholas took responsibility for the subsequent lawsuits in defense of Héder. However, Béla IV died and Stephen V ascended the Hungarian throne in 1270. His wife Queen Elizabeth the Cuman persuaded Héder to recover both estates to Lothard Gutkeled, with royal consent still in that year. These data suggest that Héder was a partisan of Béla IV during his confrontation with his eldest son and heir Stephen in the 1260s. According to the charter of the cathedral chapter of Győr in 1271, Héder caused a damage of 7 marks in the estate Bős, which he paid to Lothard's agents in the chapter. In addition, Héder testified that he could not return the estates to Lothard Gutkeled, because he did not manage to get them from Nicholas, son of Peter.
The next ispán of Hont County, Demetrius Hont-Pázmány is mentioned in this capacity only in 1275, but based on his political affiliation, Héder was presumably dismissed from this position already in 1270. He last appears as a living person in 1279, when he acted as an arbiter in a lawsuit over the ownership of Gesztence (today a borough in Jánossomorja) and Várbalog in Moson County between Conrad Győr and a maternal relative, James Bána. Héder and his wife had a son, John II, who was a supporter of Stephen V. He fought against the Bohemians, who invaded the Western borderlands of Hungary in April 1273. He was present in the sieges of Győr and Sopron. Therefore, he was granted Dabrony in Veszprém County. He died without male descendants sometime around 1284; there were some complaints that he unlawfully held a portion of Novák seizing it from Conrad Győr.