About Ben Zion Zeev (Wolf) Bleger
Mario Blejer and I were unable to find out what became of Wolf Blejer and his family. Did they return to the Ukraine? Did they emigrate to the United States? Unless they were all wiped out by an epidemic, it makes no sense that Chaim Alter's descendants would be unaware of them.
We knew that Wolf Blejer was Chaim Alter's brother and have his records that he was an early settler in Monigotes. Beyond that, he vanished.
Update 2010: Mario Blejer found Wolf Blecher's gravestone so we know now with certainty that he stayed in Argentina, that he was the son of Yosef Ber and brother of Chaim Alter. And that his name was Ben Zion. See the photograph of Ben Zion (Wolf) Ber's gravestone (photos).