He was a son-in-law of Yosef Yitzchok Schneersohn, the sixth Chabad-Lubavitch rebbe, and the brother-in-law of Menachem Mendel Schneerson, the seventh.
He held a familial connection to Yosef Yitzchok Schneersohn, the sixth leader of the Chabad-Lubavitch movement, as his son-in-law, and was also related to Menachem Mendel Schneerson, who succeeded him as the seventh leader.