British business magnate Richard Branson, right, appears with his wife Joan Templeman during a ceremony honoring him with a star on the Hollywood Walk of Fame, in Los Angeles, on October 16, 2018. Chris Pizzello/Invision/Chris Pizzello/Invision/AP AP —

Joan Branson, the wife of British billionaire Richard Branson, has died at age 80.

Branson announced her death Tuesday on Instagram and LinkedIn. No other details were disclosed.

“Heartbroken to share that Joan, my wife and partner for 50 years, has passed away,” he said. “She was the most wonderful mum and grandmum our kids and grandkids could have ever wished for. She was my best friend, my rock, my guiding light, my world.”

Richard Branson is the founder of Virgin Atlantic airline, space tourism company Virgin Galactic and

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