Hebrew calendar
Mar ben R. Huna (Hebrew: מר בר רב הונא or Mar b. Huna or Mar bar Huna); (died 614 [ד'שע"ד, Hebrew calendar] or 620 [ד'ש"פ, Hebrew calendar]) was one of the first Gaons, and head of the Sura Academy in Babylon at the end of the rule of the Sassanid Empire.