Eliezer ben Joel HaLevi
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Eliezer ben Yoel HaLevi (d. 1225) was a noted rabbi and Talmudic scholar. He was a grandson of Raavan and authored Sefer Avi Ezri which is more commonly known by its author's acronym as Sefer Ra'avyah. He had a significant influence on the Rosh. As a rishon, he was prominent amongst the middle-aged Tosafists.