Partzovitz was born in
Trakai, Poland to its
Chief Rabbi, Aryeh Tzvi Partzovitz, who was a grandson of the
posek (decider on points of Jewish law) of
Vilna, Rabbi
Shlomo HaKohen. Partzovitz studied in the
Baranovich Yeshiva under
Elchonon Wasserman. At the age of fifteen he attended the
Yeshivas Mir, which his father had graduated from, under acting Rosh Yeshiva
Chaim Leib Shmuelevitz. Soon after he began studying there, the Mir Yeshiva was exiled to
Shanghai to escape the
Holocaust which murdered much of European Jewry during
World War II. After briefly immigrating to
Toronto, Ontario, Canada, following
World War II, Partzovitz moved to Israel and joined the newly established Mir Yeshiva of
Jerusalem. There he married Ettel, Shmuelevitz's daughter. Following the death of Shmuelevitz in 1979, Partzovitz was promoted to Rosh Yeshiva of Mir. Due to physical illness, his active reign as Rosh Yeshiva was short-lived. As a Talmudic lecturer and later Rosh Yeshiva in Mir Yeshiva. Partzovitz was survived by his two sons, both rabbis, once of whom is Tzvi Partzovitz (Rosh
Yeshiva of Mir Brachfeld). Partzovitz's daily and general lectures are being printed posthumously by his children and students as
Chiddushei Reb Nochum and
Shiurei Reb Nochum. A
Haggadah featuring words of
Torah from the various Rosh Yeshivas of Mir also includes his commentaries and lectures. ==Notable students==