Rav Shmuel Alexander Unsdorfer

Rav Shmuel Alexander Unsdorfer of Montreal and Petach Tikva (2002). He served as Rosh Yeshiva of the first Mesivta of Canada, founded in 1948 by the Klausenberger Rebbe. In 1956, he was sent by the Canadian Rescue Committee in Montreal to Vienna to help refugees from Hungary. He later moved to Eretz Yisrael and served as Rav of the Chassidei Tzanz Beis Hamedrash in Petach Tikvah.