Of German Jewish ancestry and born Jerome Herman Steinberger, he had had his name changed to Stonborough in 1900. He was also an art collector. Major John Jerome Stonborough (11 June 1912, Vienna - 29 April 2002, Ferndown, Dorset).
Although a United States citizen, he served in the Canadian army during Second World War as an intelligence officer and interpreter.
After the First World War, Stonborough-Wittgenstein was appointed by the American Relief Administrator Herbert Hoover (later president of the United States) as special representative of the American Relief Program for Austria. When working in juvenile prisons as a psychotherapy adviser, she came into contact with Sigmund Freud and was analyzed by him over the course of two years.
They remained in contact until Freud"s death. In 1940, she emigrated to the United States of America, but returned to Austria after the war and obtained restitution of part of her wealth which had been confiscated by the Nazis.