Mordechai Zeev Ettinger, A.B.D. Lwow

Father of Isaac Aaron; born 1804; died June 30, 1863, at Lemberg. He published in collaboration with his brother-in-law, Joseph Saul Nathanson, the following: "Mefareshe ha-Yam" (Lemberg, 1827), a commentary to the work of his uncle, Moses Joshua Heschel, rabbi at Tarnogrod, who had published a work on Baba Kamma under the title "Yam ha-Talmud"; "Me'irat 'Enayim" (Wilna, 1839; Zolkiev, 1842); "Magen Gibborim," on the Shulḥan 'Aruk, Oraḥ Ḥayyim (part 1, Lemberg, 1834; part 2, Zolkiev, 1839); "Haggahot 'al ha-Shas" (printed in the Wilna Talmud ed.); "Ner Ma'arabi," annotations to the Jerusalem Talmud (printed in the Jitomir ed.); "Ma'aseh Alfas," on the .

After a collaboration of twenty-five years a difference arose between the two brothers-in-law, which was brought to a crisis by Rabbi Solomon Klüger's "Moda'ah le-Bet Yisrael" in reference to the baking of maẓẓot by machinery, Rabbi Joseph Saul's answer, "Biṭṭul Moda'ah" (1859), not meeting with Ettinger's approval. Ettinger even before this had commenced to work alone, publishing "Ma'amar Mordekai" to the Shulḥan 'Aruk (Lemberg, 1852), and writing much that is still in manuscript.

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