Hello,
I am the great grandson of Aharon Eliahu Polak, the brother of Michael Polak (53 of the founder list), who when died left the house to Aharon.
http://ahuzatbait.org.il/blog/2013/11/03/%D7%A4%D7%95%D7%9C%D7%90%D...
Aharon had 3 children, Baruch, Aliza and Dov. Baruch is my grandfather and left Israel to Brazil in 1929 where he changed the name to Boris Pollack (I have his British Palestine Passport issued in 1927 under the name of Baruch Pollack). Baruch family tree is empity because I think nobody had any info about him.
I found in the Bialystok, Poland files that he was born there in 1901, where Aharon and Lifsha got married in 1900. But in the passport it is writen Kalvarija, Lithuania as the place of birth... probably wrong. It seems Aharon family was indeed from Kalvarija.
I want to contact anyone or relatives who can give more info about the family. If anyone knows somebody who can help me, I would appreciate.
Thank you,
Daniel Pollack