Information: Wikipedia

A Stolperstein literally "stumbling stone", metaphorically a "stumbling block" is a sett-size, 10 by 10 centimetres (3.9 in × 3.9 in) concrete cube bearing a brass plate inscribed with the name and life dates of victims of Nazi extermination or persecution.

The Stolpersteine project, initiated by the German artist Gunter Demnig in 1992, aims to commemorate individuals at exactly the last place of residency—or, sometimes, work—which was freely chosen by the person before he or she fell victim to Nazi terror, euthanasia, eugenics, was deported to a concentration or extermination camp, or escaped persecution by emigration or suicide. As of 29 March 2018, over 67,000 Stolpersteine have been laid in 22 countries, making the Stolpersteine project the world's largest decentralized memorial.

The majority of Stolpersteine commemorate Jewish victims of the Holocaust. Others have been placed for Sinti and Romani people (then also called "gypsies"), homosexuals, the physically or mentally disabled, Jehovah's Witnesses, black people, members of the Communist Party, the Social Democratic Party, and the anti-Nazi Resistance, the Christian opposition (both Protestants and Catholics), and Freemasons, along with International Brigade soldiers in the Spanish Civil War, military deserters, conscientious objectors, escape helpers, capitulators, "habitual criminals", looters, and others charged with treason, military disobedience, or undermining the Nazi military, as well as Allied soldiers.

Born in Amsterdam, 13 June 1933 – Died in Auschwitz, 6 September 1944. Reached the age of 11 years.

In September 1943 Duifje Gans was brought to Limburg and taken in by a family on the Stationsweg in Venray. On 16 August 1944 she was taken from her home by the state police from Eindhoven and taken to Eindhoven.  Duifje went from the police station in Eindhoven to Vught and from there to Westerbork.

Born in Amsterdam, 16 December 1875 – Died in Auschwitz, 6 September 1944. Reached the age of 68 years.  Occupation: Musician.

Emanuel Staal was a son of Simon and Hester Staal. He was married to Clara Hamburger. She passed away in 1939. They had a son Simon.  On August 22, 1944, Emanuel Staal was arrested in Venray at the Sint-Servaas Institute.