Holy See of Cilicia

The Armenian Catholicosate of the Great House of Cilicia () 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 of the Armenian Apostolic Church since 1995.
Early history of the Armenian Church.
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 of the Armenian Apostolic Church, and King Tiridates III of Armenia, the ruler of the time, played a pivotal role in the official Christianization of Armenia. St. Gregory the Illuminator became the organizer of the Armenian Church hierarchy. From that time, the heads of the Armenian Church have been called Catholicos and still hold the same title. 
St. Gregory chose as the site of the Catholicosate then the capital city of Vagharshapat, in Armenia. He built the pontifical residence next to the church called "Holy Mother of God" (which in recent times would take on the name of Holy Etchmiadzin).
In 485 AD, the Catholicosate was transferred to the new capital 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).
Early era of the Catholicosate in Cilicia (1058–1293).
After the fall of Ani and the Armenian Kingdom of Bagradits in 1045, masses of Armenians migrated to Cilicia. The Catholicosate, together with the people, settled there. The seat of the church (now known as The Catholicosate of the Great House of Cilicia) was first established in Sivas (1058 AD) moving to Tavbloor (1062 AD), then to Dzamendav (1066 AD), Dzovk (1116 AD), Hromgla (1149 AD), and finally in Sis (1293), the capital of the Cilician Kingdom.
After the fall of the Armenian Kingdom of Cilicia, in 1375, the Church also assumed the role of national leadership, and the Catholicos was recognized as Ethnarch (Head of Nation). This national responsibility considerably broadened the scope of the Church's mission.
Two Catholicosates starting in 1441 AD.
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 with the primacy of the Catholicosate of All Armenians in the Mother See of Holy Etchmiadzin recognized by the Catholicosate of the Great House of Cilicia. The Supreme Patriarch and Catholicos of All Armenians resides in the Mother See of Holy Etchmiadzin.
Catholicosate in Sis (1293–1930).
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. The monastery of St. Sophia of Sis, home of the Catholicosate, dominates the town in early 20th-century photographs.
During the Armenian Genocide, in 1915, the Armenian population in Cilicia was mostly destroyed. The last Catholicos to reside in Sis was Sahak II (Catholicos from 1902 to 1939). In 1921, after renewed massacres of Armenians in Cilicia by Kemalist Turkey, Sahak II, with the surviving Armenian population, fled to find refuge in Syria.
Catholicosate in Antelias, Lebanon (1930–present).
Sahak II after leaving the premises of the Catholicosate in Sis stayed at various locations in Northern Syria and in Lebanon, running the affairs of the Catholicosate.
In 1922 the American Committee for Relief in the Near East established an orphanage in Antilias for survivors of the genocide. It continued operating until 1928. After the foundation's Executive Committee was petitioned in 1929 by Sahak II, in 1930 the now-vacant buildings of the orphanage were leased to the Cilicia Catholicosate for a period of five years to be used as a seat for the Catholicosate and a seminary for training priests and teachers. The foundation also agreed to contribute $6000-$7000 yearly towards running costs. The first mass in the Catholicosate's seminary at Antelias took place on Sunday, October 12, 1930.
Using donations from Simon and Mathilde Kayekjian, the Catholicosate eventually purchased the property and land that housed the Catholicosate in Antelias. Ailing Catholicos Sahak II, who died in 1939, was aided in his later years by Papken I, who served as Catholicos Coadjutor from 1931 until his death in 1936.
The St. Gregory the Illuminator Cathedral was built through the donation of a benefactor whose name, Sarkis Kenadjian, was only revealed after his death, according to his wish. A chapel in memory of the one and a half million Armenian martyrs was also built, followed by a residence for the Catholicos, called Veharan (), and a new Seminary building. The chapel was built after the donation of Armenian-Cypriot benefactor and art collector Vahram Utidjian, son of Apisoghom Utidjian, official translator for the British government in Cyprus. However, the "Cilicia" museum is a much later development; it was built and inaugurated in 1997.
Thus, the complex of the Catholicosate of the Great House of Cilicia in Antelias includes:
The Catholicosate complex also includes the mausoleum / cemetery where members of the Antelias congregation are buried. For a certain period, the Catholicosate also hosted an elementary Armenian school within the Catholicosate complex, but the school was moved to a new location a few kilometers away due to the expanding number of students and grade levels, as well as the need for additional classroom space.
The theological seminary located in the nearby mountains in Bikfaya also serves as summer residence for the Catholicos and the clergy.
Publications.
"Hask".
The Catholicossate has its own publishing house and has a number of publications, most notably the monthly "Hask" (in Armenian Հասկ), the official organ of the Holy See of Cilicia.
Others.
The Catholicosate also publishes a great number of books in Armenian and other languages, mainly on church literature as well as Armenian historical, cultural and literary subjects and series/collections of important Armenian literature.
The Catholicosate of the Great House of Cilicia also organizes an annual book fair on the occasion of Feast of the Holy Translators (known also as Surb Tarkmantchats), an official holiday on the calendar of the Armenian Apostolic Church to commemorate the legacy of the translators of the Bible and other Christian religious books to Armenian language in the 5th century.
"Hask Armenological Review".
It also publishes the annual "Hask Armenological Review" (in Armenian Հասկ Հայագիտական Հանդէս) on Armenian studies