Ah! The dates and names are all similar but the locations are not quite consistent with my Nathan. We knew him as Karnovitz or Karnovitch but he changed his name to Greemspan in order to relocate to Palestine but later relocated to St. Louis around 1923. His mother was Sarah, who was his real mother. I think his father's name was David (now that I recall). They all lived in Aishishuk and his mother immigrated to the U.S. in the 1930s when there were warning of mass executions by the Nazis, leaving behind her family (except Nathan) who were all executed in the famous massacre in Sept., 1941. So ... no violinists in our family after all. That explains a few things LOL!