As one of the confidants of the pretender Géza, he strongly opposed the rule of King Béla III, who therefore deprived from his dignity in 1176.
[2] Early scholars, including György Pray and István Katona accepted the data without doubt and interpreted the term "deponitur" as the burial of Stephen.
Accordingly, Stephen belonged to those magnates and prelates, including Queen Euphrosyne, who supported the claim of Duke Géza to the Hungarian throne against his elder brother Béla III, who arrived from the Byzantine Empire to ascend the kingship.
Béla's coronation took place on 18 January 1173, performed by an unidentified Archbishop of Kalocsa (possibly Chama), thus Stephen definitely did not yet hold the position during that time, in accordance with Udvardy's narration.
[1] His successor, Andrew was transferred from the Diocese of Győr to the Archbishopric of Kalocsa in 1176 (it is possible that he was elected in the absence of Stephen, who fled Hungary by that time).