Abba Avuhah of Rabbi Yirmiyah, and in the chapter of the Techelet [(M'z 1)] it is taught: The father of Rabbi Yirmiyah, son of Abba, and in the chapter "What is an Animal?" Rabbi said: There is no greater among the penitents than Yoshiyahu in his generation, and another in our generation, and who is he? Abba Avuhah of Rabbi Yirmiyah, son of Abba. And some say: Achah, the brother of Abba Avuhah of Rabbi Yirmiyah, son of Abba, as it is stated: Rabbi Abba and Achah were brothers. [And Rabbi Yosef said: And another one in our generation, and who is he?
Uqban bar Nechemyah, Rabbi Gamliel, and this is Nathan the Tzutzita (in his name). Ze'ira said in his name. Rava in his name.]
Seder_HaDorot,_Tanaim_and_Amoraim.23:1