Tzvi Ashkenazi

Tzvi Hirsch ben Yaakov Ashkenazi, known as the Hakham Tzvi after his responsa by the same title, served for some time as rabbi of Amsterdam. He was a resolute opponent of the followers of the self-proclaimed messiah, Sabbatai Zevi. He had a chequered career due to his independence of character. He visited many lands, including England, where he wielded much influence. His responsa are held in high esteem.