From Wikipedia the free encyclopedia Donna Corcoran born September 29 1942 is a former child actress who appeared in several Hollywood films of the early 1950s She most notably appeared in several aquatic musicals that featured Esther Williams playing swimmer Annette Kellerman as a child in one of themand as a vulnerable girl being victimized by an emotionally disturbed babysitter played by Marilyn Monroe in a more serious drama After making her last film in 1955 she made a token comeback as a young adult in an episode of the longrunning television sitcom My Three Sons starring Fred MacMurray in the early 1960s before finally leaving acting altogether Corcoran was born in Quincy Massachusetts to William Bill Corcoran Sr 19051958 and the former Kathleen McKenney 19171972 Several of her siblings were also child stars including younger sister Noreen Corcoran who played Kelly Gregg on John Forsythes Bachelor Father CBS NBC and ABC Two younger brothers also went into acting Kevin Anthony Corcoran a star of various Walt Disney films and later a director and producer and Kelly Corcoran 19582002 as a child star appeared in the Barry Sullivan western series The Road West 19661968 Another brother Brian Corcoran also worked in television as a youth Description above from the Wikipedia article Donna Corcoran licensed under CCBYSA full list of contributors on Wikipedia