Yosef Yitzchak Schneersohn
Russian orthodox rabbi (1880–1950)

Yosef Yitzchak (Joseph Isaac) Schneersohn (Yiddish: יוסף יצחק שניאורסאהן; 21 June 1880 – 28 January 1950) was an Orthodox rabbi and the sixth Rebbe (spiritual leader) of the Chabad Lubavitch Hasidic movement. He is also known as the Frierdiker Rebbe (Yiddish for "Previous Rebbe"), the Rebbe RaYYaTz, or the Rebbe Rayatz (an acronym for Rabbi Yosef Yitzchak). After many years of fighting to keep Orthodox Judaism alive from within the Soviet Union, he was forced to leave; he continued to conduct the struggle from Latvia, and then Poland, and eventually the United States, where he spent the last ten years of his life.
Early life
Yosef Yitzchak Schneersohn was born in Lyubavichi, Mogilev Governorate, Russian Empire (present-day Smolensk Oblast, Russia), the only son of Sholom Dovber Schneersohn (the Rebbe Rashab), the fifth Rebbe of Chabad. He was appointed as his father's personal secretary at the age of 15; in that year, he represented his father in the conference of communal leaders in Kovno. The following year (1896), he participated in the Vilna Conference, where rabbis and community leaders discussed issues such as: genuine Jewish education; permission for Jewish children not to attend public school on Shabbat; and the creation of a united Jewish organization for the purpose of strengthening Judaism. He participated in this conference again in 1908.
On 13 Elul 5657 (1897), at the age of 17, he married his second cousin, Nechama Dina Schneersohn, daughter of Rabbi Avraham Schneerson of Chișinău, son of Rabbi Yisroel Noach of Nizhyn, son of Rabbi Menachem Mendel Schneersohn, the Tzemach Tzedek.
In 1898, he was appointed head of the Tomchei Temimim yeshiva network.
In 1901, with financial support from Yaakov and Eliezer Poliakoff he opened spinning and weaving mills in Dubrovno and Mahilyow and established a yeshiva in Bukhara.
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