I notice that you have listed Kronheim as a surname of interest.
My great grandmother was Sophie Kronheim (1853-1927) and was born in Schlitt, Germany. She married Julius Leiser Lasnitzki who came from Guttstadt, Poland. I believe that Sophie (sibling/cousin?) would also have been related to Johanna Kronheim who came from Konigsberg. Johanna married Jakob Simonsohn and together they had 3 sons; Max (1873); Selmar about 1875 and Moritz born 14 March 1882 in Schönwalde, Barnim, Brandenburg, Germany and died 21 April 1921 in Schönwalde, Barnim, Brandenburg, Germany. I am looking for any information that may be out there with regard to my great grandparents and their extended families.
Thanks in anticipation,