Mendel Knopf, born July 13, 1897 in Warta, Poland, came to Halberstadt in the early 1920s with his wife Fradel, née Friede, born July 29, 1900 in Turek, Poland. Here in the Jewish community they found an environment where they could live according to Jewish religious law without any problems. The Knopfs were observant Jews. They ran a wholesale tobacco business. The family lived in Voigtei No. 36. Mendel and Fradel Knopf had five children: Erna (Knopf) Scott, April 1, 1925 - 2020; Max, April 18, 1926 – January 10, 2002; Lasar, October 6, 1927 – April 14, 1984; Salli, December 18, 1928 – May 18, 1972 and Hans, May 24, 1931 – deceased, year unknown.