Orbász (or Vrbas) was born into the gens (clan) Báncsa, an original settler family from Bács County (today Bač, Serbia).
[2] Under the guidance of his uncle, who was created cardinal by Pope Innocent IV in December 1251, Orbász and his other cousins had the opportunity to begin their ecclesiastical careers in Rome.
[4] He already served as provost of Požega in March 1264, when Pope Urban IV provided him a church position of canon in the Padua Cathedral, upon the request of his uncle Cardinal Stephen Báncsa.
[5] In the next month, Orbász was granted two churches (Holy Cross and St. Mary) in the Archdiocese of Esztergom for ecclesiastical benefices, replacing Gerardus de Parma, who died in office.
[8] Elizabeth (at least de jure) governed the kingdom for his ten-year-old son, Ladislaus IV until 1277, but she lost all political influence by the time of Orbász's chancellery.