Mar bar Rav Ashi
Babylonian rabi

Mar bar Rav Ashi (Hebrew: מר בר רב אשי) (d. 468) was a Babylonian rabbi who lived in the 5th century (seventh generation of amoraim). He would sign his name as Tavyomi (or Tabyomi, Hebrew: טביומי), which was either his first name or his nickname.
Biography
According to Abraham ibn Daud, he received his personal name (Tavyomi) due to the "good days" (Aramaic: tav=good, yomei=days) which prevailed during his lifetime. However, this tradition is difficult to understand, since the beginning of his official activity was marked by the bitter religious persecution by Yazdegerd II. That king died in 457; and his death was ascribed in part to Tavyomi's prayer. The name he is usually known by, Mar bar Rav Ashi, translates to "Master, son of Rav Ashi", as he was the son of Rav Ashi.
He achieved a reputation for scholarship even during Rav Ashi's lifetime. There is an allusion to his marriage, which took place in his father's house.
He was not elected director of the Sura Academy until 455 (ד'רט"ו, Hebrew calendar), 28 years after his father's death, when he was chosen under the extraordinary circumstances as described in the Talmud. He held this position until his death, on the 11th of Tishrei, Motzei (the day after) Yom Kippur, 468.
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