Baal Shem Tov	(lit., "Master of the Good Name"): R. Yisrael ben R. Eliezer (1698-1760), founder of Chassidism.
The Maggid of Mezritch	(lit., "the preacher of Mezritch"): R. Dov Ber (d. 1772), disciple of the Baal Shem Tov, and mentor of the Alter Rebbe.
The Alter Rebbe	(lit., "the Old Rebbe": Yid.): R. Schneur Zalman of Liadi (1745-1812), also known as "the Rav" and as Baal HaTanya; founder of the Chabad-Lubavitch trend within the chassidic movement; disciple of the Maggid of Mezritch, and father of the Mitteler Rebbe.
The Mitteler Rebbe	(lit., "the Middle Rebbe": Yid.): R. Dov Ber of Lubavitch (1773-1827), son and successor of the Alter Rebbe, and uncle and father-in-law of the Tzemach Tzedek.
The Tzemach Tzedek	R. Menachem Mendel Schneersohn (1789-1866), the third Lubavitcher Rebbe; known by the title of his Halachic responsa as "the Tzemach Tzedek"; nephew and son-in-law of the Mitteler Rebbe, and father of the Rebbe Maharash.
The Rebbe Maharash	(acronym for Moreinu ("our teacher") HaRav Shmuel): R. Shmuel Schneersohn of Lubavitch (1834-1882), the fourth Lubavitcher Rebbe; youngest son of the Tzemach Tzedek, and father of the Rebbe Rashab.
The Rebbe Rashab	(acronym for Rabbi Shalom Ber): R. Shalom Dov Ber Schneersohn of Lubavitch (1860-1920), the fifth Lubavitcher Rebbe; second son of the Rebbe Maharash, and father of the Rebbe Rayatz.
The Rebbe Rayatz	(acronym for Rabbi Yosef Yitzchak; also known as der frierdiker Rebbe "the Previous Rebbe": Yid.): R. Yosef Yitzchak Schneersohn (1880-1950), the sixth Lubavitcher Rebbe; only son of the Rebbe Rashab, and father-in-law of the Rebbe.
The Rebbe	Rabbi Menachem Mendel Schneerson (1902), the seventh Lubavitcher Rebbe; eldest son of the saintly kabbalist, R. Levi Yitzchak, rav of Yekaterinoslav; fifth in direct paternal line from the Tzemach Tzedek; son-in-law of the Rebbe Rayatz.