On 3 October 2021, following a suggestion from Michael Hornung, Gunter Demnig laid a stumbling stone for Mathilde Guggenheim, who was murdered in Kulmhof concentration camp.

Mathilde Veit was born on 7 July 1889 in Gailingen near Constance. Her parents were the trader Samuel Veit and his wife Fanny (née Moos). On 2 August 1909 she married Karl Guggenheim and went to live with him in Nuremberg, where he traded in silkware.

Karl was born on 31 August 1879 in Randegg, a few kilometres north of Gailingen. He moved to Nuremberg at the beginning of January 1901. The couple had three sons: Herbert (born on 4 May 1910), Julius (born on 15 April 1911) and Walter (born on 14 March 1914).

Herbert emigrated to Spain in August 1933 and later went to live in Switzerland. Julius, together with his wife Chana (née Weinberger), emigrated to Palestine, followed later by his younger brother Walter.

Karl Guggenheim died on 11 June 1931 in Nuremberg. His widow moved to Constance in June 1937. She was deported from Berlin to the Litzmannstadt ghetto on 24 October 1941. On 4 May 1942 she was moved to Kulmhof (Chelmo) concentration camp and murdered there.