Tarzan actress Maureen O'Sullivan was the mother of which film star?

María de Lourdes "Mia" Villiers Farrow (born February 9, 1945) is an American actress, activist and former fashion model. She first gained notice for her role as Allison MacKenzie in the television soap opera Peyton Place and gained further recognition for her subsequent short-lived marriage to Frank Sinatra. An early film role, as Rosemary in Roman Polanski's Rosemary's Baby (1968), saw her nominated for a BAFTA and a Golden Globe for Best Actress. She went on to appear in films such as John and Mary (1969), Follow Me! (1972), The Great Gatsby (1974) and Death on the Nile (1978).

Farrow was born in Los Angeles, California, the third child and eldest daughter of Australian film director John Farrow (John Villiers Farrow) and Irish actress Maureen O'Sullivan, and one of seven children, with older brothers Michael Damien (1939–1958), Patrick (1942–2009), younger brother John Charles (born 1946); and younger sisters Prudence and actresses Stephanie and Tisa. Her eldest brother, Michael Farrow, died in a plane crash in 1958, at age 19; Patrick, a sculptor, committed suicide in 2009. Her father's family was originally from England.