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Meir Eisenstaedter (Meir ben Judah Leib Eisenstädter, 1780-1852) was a nineteenth-century rabbi, Talmudist, and paytan (liturgic poet). He is best known as the author of Imre Esh (Words of Fire), the collection of his responsa published by his son in 1864.
Eisenstaedter was also known as Maharam Asch (a Hebrew acronym for "Morenu ha-Rav Meir Eisenshtadt" meaning "our teacher, Rabbi Meir Eisenstadt"), Meir Gyamath, and Meir Ungvar after his later rabbinates.
Eisenstaedter studied at the Mattersdorf yeshiva in Nagymarton, Burgenland under Moses Schreiber, a renowned rabbi who later became the chief rabbi of Pressburg (Pozsony, now Bratislava in Slovakia). In his youth Eisenstaedter moved to Eisenstadt (Kismarton), from which he took his name.
Eisenstaedter was called to the Baja rabbinate in 1807, where he directed a large yeshiva. He was the intimate friend of Rabbi Götz Schwerin Kohn, who later became the Chief Rabbi of County Bács. When Schwerin's father-in-law was ruined, forcing Schwerin to seek a rabbinate, Eisenstaedter voluntarily reassigned to him the office at Baja, and on the recommendation of the Chatam Sofer, obtained a position for himself at Balassagyarmat, where he served between 1815 and 1835. In 1835 he moved to Ungvár, where he held the position of the Chief Rabbi at a large yeshiva until his death.
Eisenstaedter took an active part in the Hungarian Jewish communal life and many of the future rabbis of Hungary were his pupils. He vehemently opposed progressives who desired to introduce religious changes and reforms. The greatest rabbis of Hungary and Galicia including Solomon Kluger of Brody, Ḥayyim Halberstam of Neu Sandec (Nowy Sacz in Poland), and Simon Sofer of Cracow addressed their problems to him. Rabbi Shlomo Ganzfried, author of the Kitzur Shulchan Aruch served as dayan (rabbinic judge) during this time in Ungvár.
Eisenstaedter's major work is called Imrei Esh (Words of Fire). The title is a pun on the abbreviation of Eisenstadt, as E.S means "fire" in Hebrew. Imrei Esh contains his responsa (rabbinic answers to halachic, i.e. Jewish religious questions) and was published by his son in two parts. Imrei Yosher (Words of Honesty) consisted of sermons. and was published in Ungvár in 1864. Imrei Binah (Words of Wisdom) was a halachic novella about the Seders of Mo'ed and Nashim. It was published in 1866.
- Rabinowicz, Tzvi (2000). Hasidism in Israel: A History of the Hasidic Movement and its Masters in the Holy Land. Lanham, Maryland: Rowman & Littlefield. pp. 208–14. ISBN 978-0-7657-6068-5.