Rav Isser Zalman Meltzer

Rav Isser Zalman Meltzer, mechaber of Even Ho’Ezel, was Rosh Yeshiva of Slutzk and Eitz Chaim, Yerushalayim, and a talmid of the Netziv, Rav Chaim Soloveitchik, and the Chofetz Chaim. He was also the father-in-law of Rav Aharon Kotler, and uncle of Rav Shach. His wife was descended from Rav Meir Eisenstadt, mechaber of Ponim Meiros. Both Rav Isser Zalman Meltzer and Rav Moshe Mordechai married daughters of Rav Shraga Frank, one of the wealthiest men in Kovno, and in whose attic Rav Yisrael Salanter began teaching mussar to Rav Nosson Tzvi Finkel and Rav Yitzchok Blazer.