Ernst Wentzler from Hannoversch Münden was a paediatrician and chief expert of the so-called »Reich Committee«. He decided on the life and death of thousands of children. His father was a leather manufacturer. During the First World War, Wentzler was a reserve doctor in a military hospital in Hanover. He completed his medical studies in Göttingen in 1918. After working at Greifswald University Hospital, he set up the private Frohnau Paediatric Clinic in Berlin in 1934. He treated the children of high-ranking NSDAP functionaries. In 1936, he joined the NSDAP despite a ban on enrolment. Three years later, he was recruited for the »children euthanasia« programme. He was also involved in the »euthanasia Act«. In August 1945, he moved to his home town and ran a paediatric practice until 1964. A preliminary investigation at the Hamburg district court for murder was dropped in 1949. He died in Hannoversch-Münden in 1973.