Geraldine Chaplin was adopted by Charlie Chaplin and Oona O'Neill after they had eight biologically related children.
Geraldine Leigh Chaplin ( born July 31 , 1944 ) is a prolific actress of English , French , and Spanish language films , the fourth child of Charlie Chaplin , the first of eight with fourth wife Oona O'Neill . A subsequent long-term relationship with Chilean cinematographer Patricio Castilla ( married , 2006 ) , gave her a daughter , Oona , born 1986 .