Angela Margaret Cartwright (born September 9, 1952) is a British actress primarily known for her roles in movies and television. On television, she played Linda Williams, the stepdaughter of Danny Williams (played by Danny Thomas) in the long-running TV series The Danny Thomas Show, and Penny Robinson in the 1960s television series Lost in Space. Cartwright's most famous movie role was the part of Brigitta von Trapp in the film The Sound of Music (1965). Her older sister is actress Veronica Cartwright. Early life and career Angela Cartwright was born in Altrincham, Cheshire, England, in 1952. She made her first film appearance at the age of three years as Paul Newman's character's daughter in Somebody Up There Likes Me (1956), and appeared with Rock Hudson and Sidney Poitier in Something of Value (1957). After moving to the United States, Cartwright appeared for seven seasons in the CBS TV series The Danny Thomas Show, opposite comedian Danny Thomas. She remained close to Thomas after the series' cancellation until his death on February 6, 1991. Cartwright played the role of Brigitta von Trapp in The Sound of Music (1965). The film won five Academy Awards and eclipsed Gone with the Wind as the highest-grossing film of all-time. Cartwright played Penny Robinson in the TV series Lost in Space (1965–68). She made appearances on several TV shows, including My Three Sons, Adam-12, and The Love Boat. She was also cast in the television movies Scout's Honor (1980) and played the role of Miss D'Angelo in High School U.S.A. (1983). She played Theresa Mazzetti in Beyond the Poseidon Adventure (1979), directed by Lost in Space producer Irwin Allen. Cartwright made a cameo appearance as Reporter #2 in the 1998 Lost in Space film and as Dr. Smith's mother in the third episode of the second season of the 2018 Netflix reimagined Lost In Space series. Personal life Cartwright married Steve Gullion in 1976. They have two children. She has been a photographer for 30 years. Her work is displayed at her studio in Studio City, Los Angeles. Filmography Film Television Books and publications Pasticcio quartz is a bi-annual journal written and published by Sarah Fishburn and Angela Cartwright. Issue Number 1 was 52, full-color glossy 8.5 by 8.5 inch, pages and was published on July 23, 2007. The most current, 60 page issue (Number 15: January 10, 2014), retains the size and full-color attributes.