exilarch

[eg-zuh-lahrk, ek-suh-]

noun

one of a line of hereditary rulers of the Jewish community in Babylonia from about the 2nd century a.d. to the beginning of the 11th century.

Origin of exilarch

First recorded in 1890–95; exile + -arch

But if the Exilarch was not learned, he delegated this duty to the Gaon of Sora.
History of the Jews, Vol. III (of 6)
Heinrich Graetz
So the office of Exilarch was left vacant for a year or two.
History of the Jews, Vol. III (of 6)
Heinrich Graetz
Bostana was the first Exilarch who was the vassal of the Mahometans.
History of the Jews, Vol. III (of 6)
Heinrich Graetz
The rival Exilarch Hassan was banished to Khorasan, where he died.
History of the Jews, Vol. III (of 6)
Heinrich Graetz
The Exilarch appoints the Chiefs of the Academies by placing his hand upon their heads, thus installing them in their office.
The Itinerary of Benjamin of Tudela
Benjamin of Tudela