John (; died November 1223) was a prelate in the Kingdom of Hungary in the 12th and 13th centuries. He was Bishop of Csanád (now Cenad in Romania) between 1198 and 1201, Archbishop of Kalocsa from 1202 to 1205 and Archbishop of Esztergom between 1205 and 1223. He crowned Ladislaus III of Hungary, Andrew II of Hungary and Coloman of Halych king. Andrew II appointed him to govern the kingdom during his crusade between 1217 and 1218. Early career His origin is uncertain; some 19th-century historiographical works consider John was the brother of Queen Gertrude of Merania, King Andrew's consort. This supposition is based on Adam Franz Kollár's 1762 work, the Historiae diplomaticae juris patronatus apostolicorum Hungariae regum libri tres. However Pope Innocent III clearly stated that John was of Hungarian origin ("[...] quae de regno Hungariae originem duceret [...]"), when transferred him from Kalocsa to Esztergom in his papal bull of 6 October 1205, as Nándor Knauz's Monumenta ecclesiae Strigoniensis published the letter. John first appeared in contemporary records in 1198, when a royal document — a charter of grant of Emeric of Hungary to the Szentgotthárd Abbey — referred to him as Bishop-elect of Csanád. Thus it is presumable that he was elected to the dignity not long before (his immediate predecessor Crispin, however, was last mentioned in 1193). Later in 1198, still he was styled as bishop-elect, when Emeric donated the village of Mihályi to his loyal partisan Ugrin Csák, Bishop of Győr. By the end of the year, his election was confirmed by the newly-elected Pope Innocent, who had cordial and cooperative relationship with John. They corresponded with each other in numerous canonical and administrative affairs, which affected the daily operation of the Diocese of Csanád. For instance, John reported that several clergymen and deacons violated the law of clerical celibacy in his bishopric. On 30 January 1199, the pope commissioned Boleslaus, Bishop of Vác, John and an unidentified abbot of Zirc Abbey to investigate a legal dispute between Kalán Bár-Kalán, Bishop of Pécs and the Földvár Abbey after its abbot turned to the Roman Curia, whereafter Kalán questioned the abbey's autonomy, acquired its alleged founding charters by force and imprisoned the abbot. In the same year, John was a member of that papal committee, which investigated the charges against Elvin, Bishop of Várad, who was accused of simony and act of offense by the local