Looking for information, especially for official sources, on the siblings and ancestors of Leopold Stern & Eva Grozs, parents of Jonas Stern born 29 May 1856 and David Stern born 22 May 1858. Eva died 1858, Leopold remarried Katti Grozs. From Leopold & Katti came Herman, Betti, Sandor, Ahron and Nathan. Current best information and source is from LDS Film No. 642860. Thank you!!