his relatives. When the reconciliation of Béla and his rebellious son Duke Stephen proved to be only temporary in 1263, the king commissioned Sixtus to convince the pope to support Béla's interests and withdraw support from some pro-Stephen Hungarian prelates. For his loyal service, Sixtus was granted royal land donations from his monarch and spouse Queen Maria Laskarina in Hetény and Radvány (present-day Radvaň nad Dunajom, Slovakia) after returning home, when the civil war broke out. According to the s of three of Béla's donation letters, "[Sixtus] protected us and the right of our crown for many years". For his merits, Sixtus was also appointed as titular papal chaplain by Pope Urban after 1264. During the years spent in Rome, his envoy companion was a certain Egidius from the Diocese of Győr. In 1270, Sixtus was among the members of the Hungarian delegation presumably led by magister Ákos sent to Naples which escorted the then twelve-year-old princess Mary to marry Charles the Lame. Before that he sold another part of Hetény for 70 silver coins to Mikó Szécs. For Charles of Anjou, Hungary was an important ally, when he forged alliances in the Balkan Peninsula to counteract the surrounding great powers, the Byzantine Empire and the Republic of Venice. Charles' three documents mention Sixtus' stay in the Sicilian royal court at the end of 1270. Charles sent his notary Reginald of Florence as Sixtus' accompaniment. The diplomat returned to Hungary by June 1271. Historian Jenő Szűcs argued chronicler Simon of Kéza belonged to Sixtus' familia and also took part in the diplomatic mission, along with Master Andrew. Notes References Sources 1220s births 1280s deaths 13th-century Hungarian people 13th-century Roman Catholic priests Medieval Hungarian diplomats