I am asking for assistance from the community of great genealogy mavens. Is there any way to find out the original European surname after someone has made aliyah and changed their surname into something more Israeli. Relatives tried a few times to find out by contacting an individual with this new surname in Israel, but he never replied. We have letters from years ago with this story, but no conclusive proof. It would solve a question I have carried around for several decades. The family emigrated from Poland circa 1900.
researching Grosman, Bocian, Kremsdorf