biographical article needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately, especially if potentially libelous or harmful. (September 2009) Elisabeth Moss Moss at the International Press Academy's 12th Annual Satellite Awards, December 16, 2007 Born Elisabeth Singleton Moss July 24, 1982 (1982-07-24) (age 28) Los Angeles, California, United States Occupation Actor Years active 1990–present Elisabeth Singleton Moss (born July 24, 1982) is an American actor. Her notable roles include first daughter Zoey Bartlet on the NBC television series The West Wing (1999–2006), and secretary turned copywriter Peggy Olson on the AMC original series Mad Men (2007–present)..