Marcia Falkender was born on 10 March 1932 in Long Buckby, Northamptonshire, England, UK. She was married to George Williams. She died on 6 February 2019 in the UK.
Long time a political adviser of Harold Wilson, she used as her baroness name her mother's Dorothy surname. She is the author of 2 books. She was the longtime companion of journalist Walter Terry with whom she had 2 sons.