Actress Mamie Gummer (2008's The Loss of a Teardrop Diamond, 2008 TV mini-series John Adams, TV's The Good Wife), is the second daughter of actress Meryl Streep and artist Donald Gummer.
Mamie's first role was opposite her mother in the 1986 film Heartburn. She also appeared with her mother in 1993's The House of the Spirits and 2007's Evening. Meryl and Donald's other daughter, Grace Gummer (2011's Larry Crowne), made her onscreen debut with her mother and sister in House of the Spirits, playing the younger version of her mother's character.
Meryl's son (and Mamie's brother) Henry Gummer is an actor, filmmaker, and musician. He is in a rock band called Bravo Silva.
Meryl's brother Harry Streep is a performer who appeared as a dancer in 1978's Slow Dancing in the Big City and worked as a choreographer for 1980's You Better Watch Out.
Harry's wife Maeve Kinkead has played "Vanessa Chamberlain Lewis Reardon" on Guiding Light since 1982. Mary Streep appeared alongside her children Meryl, Harry, and son Dana Streep in Heartburn.