Grand Rabbi Shraga Feivel Hager, also known as the Kosover Rebbe, is the rebbe

Rebbe

Rebbe , which means master, teacher, or mentor, is a Yiddish word derived from the Hebrew word Rabbi. It often refers to the leader of a Hasidic Jewish movement...

 of the Kosov Hasidic dynasty

Kosov (Hasidic dynasty)

Kosov is the name of a Hasidic dynasty founded by Rabbi Menachem Mendel Hager of Kosiv, a town in Galicia, presently in Ukraine.The present Rebbe is Grand Rabbi Shraga Hager, who lives in Borough Park, Brooklyn, where most of his Hasidim also live. There is also a Kosover synagogue in Tzfas ,...

, Dayan ("rabbinic judge"), and noted orator. He resides in Borough Park, Brooklyn, New York.

Hager is a Dayan ("rabbinic judge") of the Vizhnitz

Vizhnitz (Hasidic dynasty)

Vizhnitz is the name of a Hasidic dynasty founded by Rebbe Menachem Mendel Hager. Vizhnitz is the Yiddish name of Vyzhnytsia, a village in present-day Ukraine.Followers of the rebbes of Vizhnitz are called Vizhnitzer chasidim....

 community in Borough Park.

Hager is well known for his role regarding contemporary Halacha and is not afraid to be actively involved on taboo issues amongst Haredim

Haredi Judaism

Haredi or Charedi/Chareidi Judaism is the most conservative form of Orthodox Judaism, often referred to as ultra-Orthodox. A follower of Haredi Judaism is called a Haredi ....

, on controversies where the old traditional Jewish lifestyle clashes with the modern world. He is on the board of the Internet filtering service provider J net. He is currently involved in the Kapparos

Kapparos

Kapparot is a Jewish ritual practiced by some Jews on the eve of Yom Kippur. The person swings a live chicken or a bundle of coins over one's head three times, symbolically transferring one's sins to the chicken or coins...

 controversy.

Family

Hager is a the eldest son of Rabbi Avrohom Yehoshua Heshel Hager, Kosover Rebbe; son of Rabbi Shraga Feivish Hager, (1870–1937), Zelitzchiker Rebbe; son of Rabbi Boruch Hager, (1845–1892), Vishnitzer Rebbe. The Zelitzchiker Rebbe was a son-in-law of Rabbi Moshe Hager, (1860–1925), Kosover Rebbe and author of Leket Oni.

Hager is a son-in-law of Rabbi Chaim Wosner, Satmar

Satmar (Hasidic dynasty)

Satmar is a Hasidic movement comprising mostly Hungarian and Romanian Hasidic Jewish Holocaust survivors and their descendants. It was founded and led by the late Hungarian-born Grand Rebbe Yoel Teitelbaum , who was the rabbi of Szatmárnémeti, Hungary...

 Rav

Rav

Rav is the Hebrew word for rabbi. For a more nuanced discussion see semicha. The term is also frequently used by Orthodox Jews to refer to one's own rabbi....

 of London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

; son of Rabbi Shmuel Wosner

Shmuel Wosner

Rabbi Shmuel Wosner is a Haredi rabbi and posek living in Bnei Brak, Israel....

, preeminent posek and author of Shevet Levi.