I'm Jack Soifer, born in Brazil, Swedish citizen, lived in the US. My father was fr BieloRus moved to Odessa than to Brazil. He had a cousin in Brazil, another one in Phil, US. I'm not sure if Joe was a relative, but could be a distant cousin.
Alan Soifer (check LinkedIn) is arranging a SOIFER-meeting in MI on Sept15th, when I'm there for Iom Kippur, meeting and delivering presentations in Rotary clubs n BizAssoc.in
Canada n the NE of the US.
Find me in LinkedIn n jackfer a sapo pt