Eastern Catholic faction is in full communion with the Holy See in Rome. This includes the aforementioned Syro-Malabar Church as well as the Syro-Malankara Catholic Church, the latter arising from an Oriental Orthodox faction that entered into communion with Rome in 1930 under Bishop Geevarghese Ivanios (d. 1953). As such the Malankara Catholic Church employs the West Syriac liturgy of the Syriac Orthodox Church, while the Syro-Malabar Church employs the East Syriac liturgy of the historic Church of the East. The Oriental Orthodox faction includes the Malankara Orthodox Syrian Church and the Jacobite Syrian Christian Church, resulting from a split within the Malankara Church in 1912 over whether the church should be autocephalous or rather under the Syriac Orthodox Patriarch. As such, the Malankara Orthodox Church is an autocephalous Oriental Orthodox Church independent of the Patriarch of Antioch, whereas the Malankara Jacobite Syrian Orthodox Church is an integral part of the Syriac Orthodox Church and is headed by the Syriac Orthodox Patriarch. The Iraq-based Assyrian Church of the East's archdiocese includes the Chaldean Syrian Church based in Thrissur. They were a minority faction within the Syro-Malabar Church, which split off and joined with the Church of the East Bishop during the 1870s. The Assyrian Church is one of the descendant churches of the Church of the East. Thus it forms the continuation of the traditional church of Saint Thomas Christians in India. Oriental Protestant denominations include the Mar Thoma Syrian Church and the St. Thomas Evangelical Church of India. The Marthoma Syrian Church were a part of the Malankara Church that went through a reformation movement under Abraham Malpan due to influence of British Anglican missionaries in the 1800s. The Mar Thoma Church employs a reformed variant of the liturgical West Syriac Rite. The St. Thomas Evangelical Church of India is an evangelical faction that split off from the Marthoma Church in 1961. CSI Syrian Christians are a minority faction of Malankara Syrian Christians, who joined the Anglican Church in 1836, and eventually became part of the Church of South India in 1947, after Indian independence. The C.S.I. is in full communion with the Mar Thoma Syrian Church. By the 20th century, various Syrian Christians joined Pentecostal and other evangelical denominations like the Kerala Brethren, Indian Pentecostal Church of God, Assemblies of God etc. They are known as Pentecostal Saint Thomas Christians. Terminology The Saint Thomas Christians have also been