Laura Cohn, borned Bergmann, came from Kroeben in Prussia. She married Wolf Cohn and their daughter Johanna was born in Wollstein. After the First World War, the family presumably moved to Crossen an der Oder.
Laura's daughter, Johanna, married Hermann Mannes, and the family moved with their daughter Lieselotte to Blumenthalstraße 10 (now Einsteinstraße) in Magdeburg, presumably in 1931. The building no longer exists today. From 1933 onwards, they experienced the increasing restrictions imposed on Jews in Germany.
Eventually, Laura Cohn moved in with her daughter in Magdeburg, surrounded by the changes and limitations imposed on Jewish people. Her husband was not buried in Magdeburg, and it is assumed that she returned to her daughter as a widow. She lived in the house, possibly even in her daughter's flat, and took part in all the ultimately futile considerations regarding emigration. On April 14, 1942, Laura Cohn and the Mannes family were deported to the Warsaw ghetto and later taken to the Treblinka extermination camp, where they were murdered.