Yesochor Ber Rosenbaum (1905-1981)[1] Rabbi Yitzchok Isaac Rosenbaum (1908-2000)[2] Rabbi Meir Rosenbaum Rabbi Asher Yeshaya Rosenbaum Rebbetzin Isaacson (wife of Rabbi Meir Isaacson) Rebbetzin Leifer (wife of Rabbi Avrohom Aba Leifer) Isamar Rosenbaum (1886–1973)[2] was a Hasidic rebbe of the Hasidic dynasties of Nadvorna and Kretshnif.
In the Nadvorna dynasty, all children of the rebbes open their own chasidic courts, even during their fathers' lifetime.
His wife, Malka, was the daughter of Rebbe Usher Yeshaya Rubin of Kolbuszowa, Galicia.
In 1970, three years before his death, he moved from the Washington Heights neighborhood of Manhattan to Yad Eliyahu in Tel Aviv, Israel.
All his sons and sons-in-law, were chasidic rebbes, with the sole exception of his son Rabbi Meyer Rosenbaum, who was the Chief Rabbi of Cuba and Mexico,[1] and a prolific author of scholarly works, including Torah LeOhr Hatekufah.