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Rabbi Yitzchak Dovber Schneersohn of Liadi (1833-1910), was a Hasidic rebbe in the town of Liadi. Rabbi Yitzchak Dovber was the son of Rabbi Chaim Schneur Zalman of Liadi (son of Rabbi Menachem Mendel Schneersohn, the third rebbe of Chabad). Rabbi Yitzchak Dovber succeeded his father as rebbe for a number of Chabad Chasidim in Lyady. His brother-in-law, Rabbi Levi Yitzchak became a rebbe in the town of Sirotin (Siratshin).[1] He and his brother-in-law were the last rebbes of the Liadi branch of Chabad.