He was Exilarch of the Jews in Babylon about 442-455.
Sources:
1. Stuart, R.W. "Royalty for Commoners" line 329.
2. ..., "Encyclopedia Judiaca", Vol.6, pp.1024-1025.
3. ..., "The Jewish Enclyclopedia" Vol.V, pp.288-290.
Carried as a child to Palestine, leaving a cousin to become Exilarch. Became head of the Sanhedrin in Tiberias, which is believed to have been a hereditary title of the next 11 generations. On the Sabbath when the people called on him in homage, he was carried to his house on their shoulders