The state could still appeal the ruling to the California Supreme Court.
Neither the governors office nor the state Attorney Generals Office immediately returned a message seeking comment.
The Manson killings shook Los Angeles and defined a generation.
Leslie Van Houten in 1971AP Photo/File
Director John Waters has advocated for Van Houtens parole and visited her in prison.
Four earlier parole recommendations for Van Houten were rejected by governors, including Newsom.
In a 2004 remake, she was played by Catherine Wadkins .
In 2003, Amy Yates played her in the filmThe Manson Family.
Tania Raymonde portrayed Van Houten in the 2016 filmManson Girls.
Later that same year, Greer Grammer portrayed Van Houten in Leslie Libmans film MansonsLost Girls.
In 2018, Gabrielle Klobucar took the role in the made-for-TV documentaryInside the Manson Cult: The Lost Tapes.
Also in 2018, English actress Hannah Murray played Van Houten in a feature titledCharlie Says.
City News Service contributed to this report.
