Rav Huna [the Exilarch, 852 (i.e., according to the Seleucid era), which is the year 4201 (Sefer HaKeritot). And this requires examination, for Rav Huna Rabba died in the days of Rabbi, and Rav Huna the Second was not at this time (see above year 4228 and 4261)].