Mar ben Huna
Mar ben R. Huna was one of the first Gaons, and head of the Sura Academy in Babylon at the end of the rule of the Sassanid Empire.
He led the re-opening of the Sura Academy. After some 50 years it became inactive due to Anti-Jewish decrees and pogroms during the Jewish Savora sages era. Mar ben Huna was, according to one opinion based on Iggeret Rav Sherira Gaon, the first Gaon of the Sura Academy, and according to another opinion, one of the Savora sages.