Quite problematic is to set up the tree for the Jewish families as there are existing so many records with different spelling of given names for nearly every individual at the beginning of last century. The documents quite often are based on nick names which causes severe problems in linking the right ones together.
Two hot spots are known for these families: one in Poland – former Russia – around the cities of Suwalki/Augustow and one in Ukraine, in the city of Kolomea, a part of the former Austrian empire.
And still no record found before ~ 1818.
The jewish family line is not a core part of my research as it is probably not part of our family.