The Armenian Catholicosate of the Great House of Cilicia (Կաթողիկոսութիւն Հայոց Մեծի Տանն Կիլիկիոյ) is an autocephalous Oriental Orthodox church. Since 1930, the Catholicosate of the Great House of Cilicia has been headquartered in Antelias, Lebanon. Aram I is the Catholicos of Cilicia since 1995. List of Armenian Catholicoi of Cilicia First Sis era, 267-301: According to the order of Catholicoi, *St. Gregory I the Enlightener (also known as Gregory the Illuminator) was seated in Sis 267-301 before moving to Etchmiadzin in 301 where he continued in office until 325. In 485 AD, the Catholicosate was transferred to the new capital of Armenia Dvin. In the 10th century it moved from Dvin to Dzoravank and then to Aghtamar (927 AD), to Arghina (947 AD) and to Ani (992 AD) Sivas era, 1058–1062 Tavbloor era, 1062–1066 Dzamendav (Zamidia, now Zamantı) era, 1066–1116 Dzovk (Present aka Island of Gölcük and under the lake of Hazar), era, 1116–1149 Hromgla (now Halfeti) era, 1149–1293 Second Sis era, 1293-1930 (with the Catholicosate of All Armenians returned to Etchmiadzin in 1441) Antelias, Lebanon era, since 1930 - having transferred there from Sis in Cilicia in the aftermath of the Armenian genocide. 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. In 1441, a new Catholicos of All Armenians was elected in Holy Etchmiadzin in the person of Kirakos I Virapetsi of Armenia. At the same time the retiring Catholicos in Sis Gregory IX Mousabegian (1439–1446) remained as the Catholicos of the Great House of Cilicia. Therefore, since 1441, there have been two Catholicosates in the Armenian Apostolic Church. The Catholicos of All Armenians resides in the Mother See of Holy Etchmiadzin. The city of Sis (modern-day Kozan, Adana, Turkey) was the center of the Catholicosate of the Great House of Cilicia for more than six centuries, starting in 1293 when the Catholicosate moved from Hromgla to Sis.