The 1892, 1902 and 1914 Upper Silesia business directories list a Max Borinski as owner of A. Borinski kolonialwaren and leather merchant in Sohrau. It is very likely that this firm belonged to Max's grandfather Adolf (Josef) Borinski, since a Josef Borinski is mentioned in Geshichte der Stadt Sohrau in O-S as a Sohrau merchant trading in spice and cloth in 1840. It is likely that the business thrived and passed to his son Adolf (Asher) Borinski, and later to Adolf (Asher) Borinski's fourth son, Max. (Adolf (Asher) Borinski's three eldest sons, Louis, Samuel and Wilhelm, already had kolonialwaren businesses in their own rights.)