(“Reb Itzele Ponevezher,” 1854–1919). Lengthy Autograph Letter Signed, written in Hebrew, on letterhead to R. Aharon Yoseph of Fren.

RABINOWITZ, YITZCHOK YA’AKOV.

Ponevitch

Detailed responsa relating to Agunoth, Treifoth and related Halachic matters.

The Ga’on R. Yitzchak Ya’akov Rabinowitz (R. Itzele Ponivezher) was among the disciples of the Beis HaLevi and studied with his son, R. Chaim Soloveitchik. In 1889 he headed the Slabodka Yeshiva before leaving to serve the rabbinate of Ponevezh where he founded its famed yeshiva. He was an intellectual giant in Torah and originated new paths in the conceptual understanding of Talmud. R. Itzele’s responsa were posthumously published under the title Zecher Yitzchak.