Sabbatai Zevi
Sabbatai Zevi was a Sephardic ordained rabbi from Smyrna (now İzmir, Turkey). A kabbalist of Romaniote origin, Zevi, who was active throughout the Ottoman Empire, claimed to be the long-awaited Jewish Messiah. He was the founder of the Sabbatean movement, whose followers subsequently were to be known as Dönmeh "converts" or crypto-Jews.