Patriarch

Patriarch, in Church history is the name given originally to the bishops of Rome, Antioch, and Alexandria, and later to those also of Constantinople and Jerusalem, who held a higher rank than other bishops, and exercised a certain authority over the bishops in their districts. The title is in vogue in the Greek, Syrian, Armenian, and other Churches. It was originally given to the chief of a race or clan, the members of which were called after him.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)