Yitzchak Meir Rotenberg-Alter

Yitzchak Meir Rotenberg-Alter, also known by his acronym as "The Rim," was the first rebbe of the Ger Hasidic dynasty. He was a Talmudic genius from a distinguished line of German and Polish rabbis that included Rashi and Rabbi Meir ben Baruch of Rothenburg. His hasidut was influenced by the Koznitzer Maggid, Reb Simcha Bunim of Prshischa and the Kotzker Rebbe, of whom he was a disciple. He established his own dynasty in the Polish town of Góra Kalwaria, or "Ger," in Yiddish. He is known for his work Chiddushei HaRim on Talmud and Shulchan Arukh. A collection of his insights on Chumash, "Chidushei HaRim al HaTorah", was recently published by a descendant.