Summary from Wikipedia

Schell was born in the Austrian capital Vienna, the daughter of actress Margarethe (née Noé von Nordberg; 1905–1995), who ran an acting school, and Hermann Ferdinand Schell (1900–1972), a Swiss poet, novelist, playwright, and owner of a pharmacy.[1][2] Her parents were Roman Catholics.[2] She was the older sister of actor Maximilian Schell and lesser-known actors Carl Schell (1927–2019) and Immaculata "Immy" Schell (1935–1992).