Rabbi Yitzchak Isaac HaLevi Epstein was born in 5540 (1780) to his father, Rabbi Mordechai. During the opposition to Chasidut, Rabbi Isaac left his home...
Rebbe Mordechai (Mottel) Twersky of Chernobyl was born in 5530 (1770) to his father Rebbe Menachem Nachum, the first Rebbe in the dynasty. When required...