Chaim Tzvi Teitelbaum

Rabbi Chaim Tzvi Teitelbaum (December 28, 1879 – January 21, 1926) (6 shevat 5686 on the Hebrew calendar), the Sigheter Rebbe, author of Atzei Chaim, was the oldest son of Rabbi Chananya Yom Tov Lipa Teitelbaum, the Kedushas Yom Tov.

One was Rabbi Moshe Teitelbaum, the late Satmar Rebbe.

Another was Rabbi Yekutiel Yehuda Teitelbaum, who succeeded him as Sigheter Rebbe until he was murdered in the Holocaust.

One daughter married Rabbi Yekusiel Yehudah Halberstam, the Sanz-Klausenburg'er Rebbe, but she also was murdered in the Holocaust.

Their youngest daughter, Chana, married Rabbi Yechiel Yehuda Isaacson, who was known as the Rav of Achuza-Haifa.