Michelle Dockery (35) plays "Lady Mary Crawley" one of the main characters in the series."Mary" is "Robert and Cora Crawley's" eldest daughter. "Downton Abbey" was Michelle's big breakthrough. She has won the SAG Award twice for her role as "Lady Mary" and has been nominated for an Emmy and a Golden Globe several times. She now stars as "Letty Raines" on the TV show "Good Behaviour".