Ḥayyim Shabbethai
Ḥayyim ben Shabbethai (Hebrew: רבי חיים בן שבתי), commonly known by the acronym Maharhash (Hebrew: מהרח"ש, MArenu HA-Rav ḤAyyim SHabbethai, literally translating to "Our teacher, the Rabbi Hayyim Shabbethai"; 1557 - 1647) was a Sephardic rabbi and Talmudist, who is considered to be one of the great sages of Greek Jewry, serving as the Chief Rabbi of Thessaloniki, Greece.