The Syro-Malabar Catholic Church (Syriac: ܥܸܕܬܵܐ ܩܵܬܘܿܠܝܼܩܝܼ ܕܡܲܠܲܒܵܪ ܣܘܼܪܝܵܝܵܐ) is an Eastern Catholic church based in Kerala, India. The Syro-Malabar Church is an autonomous (sui iuris) particular church in full communion with the pope and the worldwide Catholic Church, including the Latin Church and the 22 other Eastern Catholic churches, with self-governance under the Code of Canons of the Eastern Churches (CCEO). The Church is headed by the Major Archbishop of the Syro-Malabar, currently George Alencherry. The Syro-Malabar Synod of Bishops canonically convoked and presided over by the Major Archbishop constitutes the supreme authority of the Church. The Major Archiepiscopal Curia of the Church is based in Kakkanad, Kochi. Syro-Malabar is a prefix reflecting the church's use of the East Syriac Rite liturgy and origins in Malabar (modern Kerala). The name has been in usage in official Vatican documents since the nineteenth century.The Syro-Malabar Church is primarily based in India; with 5 metropolitan archeparchies and 10 suffragan eparchies in Kerala, there are 17 eparchies in other parts of India, and 4 eparchies outside India. It is the largest of the Saint Thomas Christians communities with a population of 2.35 million in Kerala as per the 2011 Kerala state census and 4.25 million worldwide as estimated in the 2016 Annuario Pontificio. It is the third largest sui juris church in the Catholic Church communion and the second largest Eastern Catholic church after the Ukrainian Greek Catholic Church.The church traces its origins to the evangelistic activity of Thomas the Apostle in the 1st century. The earliest recorded organised Christian presence in India dates to the 4th century, when Persian missionaries of the East Syriac Rite tradition, members of what later became the Church of the East, established themselves in modern-day Kerala and Sri Lanka. The Church of the East shared communion within the Great Church until the Council of Ephesus in the 5th century, separating primarily over differences in Christology and due to political reasons. The Syro-Malabar Church employs a variant of the East Syriac Rite, which dates back to 3rd century Edessa, Upper Mesopotamia. As such it is a part of Syriac Christianity by liturgy and heritage.After the schism of 1552, a faction of the Church of the East came in communion with the Holy See of Rome (modern-day Chaldean Catholic Church) and the Church of the East collapsed due to internal struggles. Throughout the later half of the 16th century, the Malabar Church was under Chaldean Catholic jurisdiction. Through the Synod of Diamper of 1599, the Malabar Church was subjected directly under the authority of the Latin Catholic Padroado Archbishopric of Goa and the Jesuits. After a half-century administration under the Goa Archdiocese, dissidents held the Coonan Cross Oath in 1653 as a protest. In response, Pope Alexander VII, with the help of Carmelite missionaries, by 1662, was able to reunite the majority of the dissidents with the Catholic Church. The Syro-Malabar Church descends from the Saint Thomas Christians who first aligned with the Catholic Church at Synod of Diamper in 1599 and those who reunited with the Holy See under the leadership of Mar Palliveettil Chandy during the period between 1655 and 1663. During the 17th and 18th centuries the Archdiocese of Cranganore was under the Syro-Malabar, but it was later suppressed and integrated into the modern day Latin Archdiocese of Verapoly.
After over two centuries under the Latin Church's hegemony, in 1887, Pope Leo XIII fully separated the Syro-Malabar from the Latin Church (the Archdiocese of Verapoly remained as the jurisdiction for Latin Catholics). Leo XIII established two Apostolic Vicariates for Syro-Malabar, Thrissur and Changanassery (originally named Kottayam), and in 1896, the Vicariate of Ernakulam was erected as well, under the guidance of indigenous Syro-Malabar bishops. In 1923, the Syro-Malabar hierarchy was organized and unified with Ernakulam as the Metropolitan See and Mar Augustine Kandathil as the first head and Archbishop of the Church. The Syro-Malabar Church in effect became an autonomous sui iuris Eastern church within the Catholic communion.The Syro-Malabar are unique among Catholics in their inculturation with traditional Hindu customs through Saint Thomas Christian heritage. Scholar and theologian Placid Podipara describes the Saint Thomas Christian community as "Hindu in culture, Christian in religion, and Oriental in worship." The Church is predominantly of the Malayali ethnic group who speak Malayalam, although there are a minority of Tamils, Telugus, and North Indians from the various eparchies outside Kerala. Following emigration of its members, eparchies have opened in other parts of India and in other countries to serve the diaspora living in the Western world. There are four eparchies outside of India, concentrated in English-speaking countries such as Australia, Canada, the United Kingdom, and United States. Saint Alphonsa is the Church's first canonized saint, followed by Saint Kuriakose Chavara, Saint Euphrasia, and Saint Mariam Thresia. It is one of the two Eastern Catholic churches in India, the other one being the Syro-Malankara Catholic Church which represents the faction of the Puthenkoor that returned to full communion with the Holy See of Rome in 1930.
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