Israel Hopstein of Kozhnitz

Chassidic leader in 18-19th century Poland, founder of the Kozhnitz dynasty. Born to his father Shabbetai at an advanced age, after having received a blessing from the Baal Shem Tov. Studied under R' Shmelke of Nikolsberg, and later under the Mezeritcher Maggid and R' Elimelech of Lizhensk. Known as the "Kozhnitzer Maggid (preacher)" for the sermons he frequently delivered in Kozhnitz. He authored many works, including: Avodat Yisrael and Yakar MiPaz on Torah, Chidushei Maggid Mishna on Mishnayot, Beit Yisrael on Talmud, Nezer Yisrael on Zohar, She'erit Yisrael on Midrash, Geulat Yisrael on Maharal's works, and others.