March 31, 2013 at 12:00 PM EDT

Mamie Gummer, daughter of Meryl Streep, and Ben Walker have decided to end their marriage after less than two years, People reports.

The 29-year-old Gummer (Emily Owens, M.D., Side Effects) and the 30-year-old Walker (Abraham Lincoln: Vampire Hunter) both starred in the 2008 Broadway production of Les Liaisons Dangereusesand wed in July 2011.

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