Syro-Malabar Church (Old Cathedral), Cathedral of Mar Abraham. In 1570, Mar Abraham established his cathedral church dedicated to
Rabban Hormizd, a seventh century Abbot of the East Syriac Church, as its patron. In 1578, as a response to the requests made by
Jesuit missionaries who had been working in Angamaly and in the other centres of the
Saint Thomas Christians, the pope granted plenary
indulgences to the Church of Rabban Hormizd, which the faithful could obtain four times a year for 25 years from the year of the election of Metropolitan Mar Abraham. The indulgences covered two feasts of the Patron Rabban Hormizd that fell on the fifteenth day after Easter (Monday) and on the first of September. On 15 August 1579, as requested by Mar Abraham, the Jesuits laid the foundation stone of a new cathedral namely "Rabban Hormizd" in the same place chosen by the Metropolitan. The
Synod of Diamper of the year 1599, prohibited the Christians from commemorating the feast of Rabban Hormizd, since Rabban Hormizd was considered a Nestorian heretic by the Latin missionaries. Session 3, Canon 14 of the Synod severely condemned Rabban Hormizd. According to the new regulations, the Synod commanded as planned by Archbishop Menezes that the Christians celebrate the feast of
Saint Hormizd, the Martyr (according to the Roman Martyrology published from Rome in 1583), a Persian Catholic saint who lived in the fifth century, suppressing the memory of Rabban Hormizd. The Feast was fixed on 8 August according to the Canon 10 of the Session 2 of the Synod of Diamper. The efforts of Archbishop Menezes and the Portuguese missionaries to replace Rabban Hormizd as patron of St. Hormizd church with St. Hormizd the martyr is an instance of sixteenth-century attempts at forced Latinization. It is doubtful whether the Christians immediately accepted this change of patronage. Bishop
Francis Ros, the first Latin bishop of the Saint Thomas Christians, attempted to resolve the conflicts created by the coercive Synod of Diamper and convoked the
Second Synod of Angamaly in December 1603. ==Later years and death==