Born out of wedlock in Graz in 1934. His mother placed him for care in a monastery, later on, various foster families. For unknown reasons, he was eventually transferred to the Child Foster Care Service and from there to Spiegelgrund, Pavilions 15 and 17. Was detained there until liberation.
After the war, Kaufmann joined the SPÖ (Socialist Party of Austria). He has dedicated himself to bringing the crimes committed at Spiegelgrund to the public’s awareness. He is the author of several books and plays, in which he deals with his experiences.