(fl. 13th cent)
French Dominican monk. He was born in Montpellier. He converted to Christianity and joined the Dominican order. In 1263 a public disputation took place in Barcelona between him and Nahmanides in the presence of King James I of Aragon. In 1269 he persuaded Louis IX of France to compel Jews to listen to his sermons and to wear the Jewish badge.
Dictionary of Jewish Biography. Dan Cohn-Sherbok.