(Some say the Yahrzeit is on the 28th of Tishrei)
Rav Nachman Tzvi Halevi Epstein, son of Rav Yitzchak, Av Beis Din of Kolomaya, was born in 5510 (1750).
He was a disciple of Rav Yitzchak Schor, the author of Koach Schor. He served as Rav of Kolomaya from 5555 (1794) until the end of his life. It is known that in his youth he was tested in Torah by the Baal Shem Tov himself.
His sons were Rav Yitzchak Zev, who succeeded him, and Rav Meshulem, Av Beis Din of Pistin. His sons-in-law were Rav Yosef, Av Beis Din of Kitov, Rav Menachem Mendel Rosen, and Rav Gedaliah Abish, Av Beis Din of Delitin.
Rav Nachman Tzvi passed away the 28th (or 2nd ) of Tishrei, 5590 (1830).