My ancestor, R' Yisrael (Nachman) ben (son of ) Yosef lived in Ostrov
(Ostraha) during the 19th cent. and came eventually to Tzfat and/or
Tveria during the first half of that century. My family lore has it
that his family name was ROSENBAUM but I have no other confirmation.
He was a descendant of the Mahara"l and Zecharia Mendel KLAUSNER via
R' Naftali KATZ (a.k.a. the "Smichas Chachamim").
Can anyone confirm the above presumption that R' Yisrael's family name
was ROSENBAUM. His children adopted the name SCHECHTER as per their
Yoni Ben-Ari, Jerusalem