Holy See of the East of Rome also claims the title of the Catholicos and the Holy Apostolic See of St. Thomas. Patriarch Mar Addai II, is the Catholicos of the Ancient Church of the East. The current Seat of the Catholicos of Ancient Church of the East is in Baghdad, Iraq. The official title of the Head & Father of the Syro-Malabar Catholic Church is "the successor to the Holy Apostolic See of St. Thomas and the Gate of All India". The church is headed by the Major Archbishop of Ernakulam-Angamaly, Cardinal Maran Mar George Alencherry. The current Seat of the Major Archiepiscopal Curia
Holy See of Cilicia Holy See of Cilicia The Armenian Catholicosate of the Great House of Cilicia () is a hierarchal see of the Armenian Apostolic Church. Since 1930, the Catholicosate of the Great House of Cilicia has been headquartered in Antelias, Lebanon. Aram I is the Catholicos of Cilicia of the Armenian Apostolic Church since 1995. The origin of the Armenian Church dates back to the Apostolic age and according to the ancient tradition was established by St. Thaddeus and St. Bartholomew. In 301 AD, Christianity was officially accepted by the Armenians as the state religion. St. Gregory the Illuminator, the patron Saint