A protosyncellus or protosynkellos ( el, πρωτοσύγκελλος) is the principal deputy of the

bishop A bishop is an ordained clergy member who is entrusted with a position of authority and oversight in a religious institution. In Christianity, bishops are normally responsible for the governance of dioceses. The role or office of bishop is ca ...

of an eparchy for the exercise of administrative authority in an

Eastern Orthodox Eastern Orthodoxy, also known as Eastern Orthodox Christianity, is one of the three main branches of Chalcedonian Christianity, alongside Catholicism and Protestantism. Like the Pentarchy of the first millennium, the mainstream (or "canonical") ...

or Eastern Catholic church. The equivalent position in the Western Christian churches is

vicar general A vicar general (previously, archdeacon) is the principal deputy of the bishop of a diocese for the exercise of administrative authority and possesses the title of local ordinary. As vicar of the bishop, the vicar general exercises the bishop's ...

Diocesan vicarial use

The protosyncellus is normally a senior

priest A priest is a religious leader authorized to perform the sacred rituals of a religion, especially as a mediatory agent between humans and one or more deities. They also have the authority or power to administer religious rites; in particu ...

archimandrite The title archimandrite ( gr, ἀρχιμανδρίτης, archimandritēs), used in Eastern Christianity, originally referred to a superior abbot (''hegumenos'', gr, ἡγούμενος, present participle of the verb meaning "to lead") who ...

chorbishop A chorbishop is a rank of Christian clergy below bishop. The name chorepiscope or chorepiscopus (plural chorepiscopi) is taken from the Greek and means "rural bishop". History Chorepiscopi are first mentioned by Eusebius as existing in the seco ...

or auxiliary bishop selected to assist the bishop with his administrative responsibilities. In this capacity the protosyncellus exercises the bishop's executive power over the entire eparchy. The title derives from the Greek term '' syncellus'' (), from ''syn'', "with", and ''kellion'', "cell" (Latin: ''cella''). ''Synkellos'' was a term used in the

early Church Early Christianity (up to the First Council of Nicaea in 325) spread from the Levant, across the Roman Empire, and beyond. Originally, this progression was closely connected to already established Jewish centers in the Holy Land and the Jewish ...

for those

monk A monk (, from el, μοναχός, ''monachos'', "single, solitary" via Latin ) is a person who practices religious asceticism by monastic living, either alone or with any number of other monks. A monk may be a person who decides to dedica ...

s or clerics who lived in the same cell with their bishops and whose duty it was to be witnesses to the purity of their lives or to perform the daily spiritual exercises in common with them. In the Eastern Church, they became the

councillor A councillor is an elected representative for a local government council in some countries. Canada Due to the control that the provinces have over their municipal governments, terms that councillors serve vary from province to province. Unl ...

s and confessors of the

patriarch The highest-ranking bishops in Eastern Orthodoxy, Oriental Orthodoxy, the Catholic Church (above major archbishop and primate), the Hussite Church, Church of the East, and some Independent Catholic Churches are termed patriarchs (and in certai ...

s and bishops and were much trusted by them. They held the first place after their masters and had a seat and vote in the

councils A council is a group of people who come together to consult, deliberate, or make decisions. A council may function as a legislature, especially at a town, city or county/ shire level, but most legislative bodies at the state/provincial or nati ...

of the Church. In the course of time the patriarchs took two or more ''syncelli'', the most distinguished of whom was called ''protosynkellos'', Latinized as ''protosyncellus''.

Missionary use

Protosyncellus is also the title for the ordinary of an Eastern Catholic Territory dependent on the Patriarch, a missionary pre-diocesan jurisdiction, even if held by or vested in the eparch of an eparchy (full bishopric).

References

New Advent Catholic Encyclopedia
article on ''Syncelli'' Byzantine ecclesiastical titles and offices Episcopacy in the Catholic Church Eastern Christian ecclesiastical offices Oriental Orthodoxy {{RC-stub