<Tr> <Th> Spouse (s) </Th> <Td> Richard Smith (1955--61; divorced) Harry Ackerman (1962--91; his death) Lou Genevrino (1992--present) </Td> </Tr> <Tr> <Th> Children </Th> <Td> Chris, Brian, Peter, and James Ackerman </Td> </Tr> <P> Mary Eleanor Donahue (born April 19, 1937), credited as Elinor Donahue, is an American actress, best remembered today for playing the role of Betty Anderson, the eldest child of Robert Young and Jane Wyatt, on the 1950s American sitcom Father Knows Best . </P> <P> Donahue was born in Tacoma, Washington, the daughter of Doris Genevieve (née Gelbaugh) and Thomas William Donahue . </P>

Who played the daughter in father knows best