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Anna Marie “Patty” Duke (December 14, 1946 – March 29, 2016) was an American actress of stage, film, and television. She first became known as a teen star, winning an Academy Award for Best Supporting Actress at age 16 for her role as Helen Keller in The Miracle Worker (1962), a role which she had originated on Broadway. The following year she was given her own show, The Patty Duke Show, in which she played “identical cousins”. She later progressed to more mature roles such as that of Neely O’Hara in the film Valley of the Dolls (1967). Over the course of her career, she received ten Emmy Award nominations and three Emmy Awards, and two Golden Globe Awards. Duke also served as president of the Screen Actors Guild from 1985 to 1988.

Duke was diagnosed with bipolar disorder in 1982, after which she devoted much of her time to advocating for and educating the public on mental health issues. She died on March 29, 2016.

She had three sons Sean Patrick Astin, Mackenzie Astin, and Kevin Pearce all of them are in the acting business.

Sean Patrick Astin is a well know actor, director, voice artist, and producer best known for his film roles as Samwise Gamgee in The Lord of the Rings trilogy, Mikey Walsh in The Goonies (1985), and the title character of Rudy (1993). 

Patty Duke played a double role again in a Liv and Maddie on the Disney Channel, it was called Grandma-A-Rooney. Many say Liv & Maddie is a modern-day successor to The Patty Duke Show. But great visual effects of making twins on the show.

Patty Duke last film is Power of the Air coming out in 2017, according to her IMDB.