Rav Shizbi
R. Shezbi was a Babylonian rabbi, of the fourth generation of amoraim.Biography
It is told that Rav Chisda was accustomed to pass the house of Rav Shizbi's father, and seeing the observance of Shabbat candles, he stated: "a great men will issue hence", and indeed he had Rav Shizbi. Indeed, Rava would eventually describe Shizbi as being a "great man".
Later Shizbi became a pupil of Rav Chisda, but also debated Halakha before Rabbah.
Aaron Hyman suggests he moved to the Land of Israel for a short period of time, where he studied Torah under Yochanan bar Nafcha.
One should distinguish between this Rav Shizbi, and Rav Shizbi II, who was a pupil of Rava.