Marie-France Boyer: Marie-France Boyer. Actress: Happiness. A stunning blonde leading lady of the late sixties, Marie-France Boyer became best known internationally for her role as the Burgundian heiress Isabelle de Croye in the Franco-German swashbuckling television series Quentin Durward (1971), based on Sir Walter Scott's 1823 novel. Prior to that, she was noted for her key role in Agnès Varda's award-winning New Wave drama Happiness (1965) and leads in the films Une...