Mary McCormack

 Mary Catherine McCormack (born February 8th in 1969) is an American actress. As Justine Appleton (1995-97) as Deputy National Security Advisor Kate Harper (2004-06), and as the Deputy U.S. In Plain Sight (2008)-12, Marshal Mary Shannon (2008-12), as Deputy National Security Adviser Kate Harper on The West Wing (2004-06) and as Peggy (2018-19). Their divorce took place in the year 1990. The sister Bridget was the Chief Justice of the Michigan Supreme Court, and was a former Professor of law at the University of Michigan Law School.Her brother William is an actor, writer, and producer, who has played an ongoing role as FBI agent Robert O'Connor on In Plain Sight.In 1987, McCormack graduated from the Wardlaw-Hartridge School in Edison, New Jersey. In 1991, she graduated with her bachelor's degree in comparative arts including writing and painting from Trinity College in Hartford, Connecticut.