Klaus Fuchs was born in Rüsselsheim, Grand Duchy of Hesse, the third of four children to Lutheran pastor Emil Fuchs and his wife Else Wagner. Fuchs' father was later a professor of theology at Leipzig University.[1] He became an active Quaker in Germany, England, and in the United States.[2] Fuchs' grandmother, mother, and his older sister eventually committed suicide (his mother in c.1932, his sister in 1939 to avoid capture by the Nazis),[citation needed] while his younger sister was diagnosed as schizophrenic.[2]
