(d. 1439)
Bohemian rabbi, kabbalist and poet. He lived in Prague. There he witnessed the massacre of the Jewish community in 1389 as a result of the accusation that they had desecrated the host; he wrote an elegy to commemorate their sufferings. His other writings include rabbinic studies and kabbalistic works. He also engaged in polemical debates with Christians. According to legend, he was a favourite of Wenceslaus IV, King of Bohemia, and played an important role in his court.
Dictionary of Jewish Biography. Dan Cohn-Sherbok.