Jacob ben Aaron Sasportas

Jacob ben Aaron Sasportas (1610 – April 15, 1698) was an Algerian-born rabbi, kabbalist, diplomat and author. He served as the rabbi of various Jewish communities in North Africa and later in Western Sephardic communities across Europe, including London and Amsterdam. He is perhaps best known for his vocal opposition to the messianic claims of Sabbatai Zevi.