Oran, Morocco-Amsterdam, Holland
Upon ordination at age 24, he became rabbi successively of Tiemcen, Morocco, Fez and Sali.
Kabbalist and rabbi and a fierce opponent of Shabbetai Zevi. On the side, he also served as envoy of Morocco to the Spanish Court.
He later became head of the yeshiva in Amsterdam. In his battle against Sabbatianism he produced Tsitsit Novel Zvi in which he collected vast material, including pamphlets and letters, which he answered in detail. [b. 1610; d. 1698]