She and Jagger began dating in 1966 and became one of the most glamorous and notorious couples of 1960s “Swinging London.”

Marianne Faithfull died on Thursday in London at the age of 78. LOS ANGELES - Marianne Faithfull, the British pop star who helped write some of the Rolling Stones’ greatest songs, has died. She was 78 years old. Faithfull passed away on Thursday in London, her music promotion company, Republic Media, said.

Marianne Faithfull, the British singer-songwriter, rolling stones muse, and pop icon known for her tumultuous life and enduring musical legacy, has passed away at the age of 78.