Rabbi DovBer, known as "The Maggid of Mezeritch", was the disciple of, and successor to, the founder of Chassidism, Rabbi Israel Baal Shem Tov. Rabbi DovBer led the Chassidic movement from 1761 until his passing on Kislev 19, 1772.
Links:
The Maggid's Passing
About Rabbi DovBer of Mezeritch







