Mamie Gummer and Ben Walker
03/30/2013 at 07:15 PM EDT
After nearly two years of marriage, it's over for Meryl Streep's daughter Mamie Gummer and Ben Walker, Gummer's rep confirms to PEOPLE.
The pair tied the knot
in July 2011 at Gummer's family estate in Connecticut. Claire Danes
was among the 150 guests who attended the wedding.
Gummer, 29, and Walker, 30, who got engaged in October 2009
, met while performing in Broadway's Dangerous Liaisons
together in April 2008.
Walker's Broadway run in Cat on a Hot Tin Roof
alongside Scarlett Johansson
wraps up Saturday. Gummer is currently starring in the mystery thriller Side Effects