John Lennon was married twice before his death. First to Cynthia Lennon, and then famously to Japense singer, songwriter, and peace activist Yoko Ono, who was born Feb. 18, 1933.

John started an affair with Yoko while he was married to Cynthia, which led to the pair getting a divorce. He and Yoko got married in 1969, and his career as a founding member of The Beatles led to Yoko also being thrust into the spotlight. John and Yoko were very involved in peace activism during their marriage, notably protesting against the Vietnam War. They also recorded some music together. Their son Sean Lennon was born in October 1975.

On December 8, 1980, John was fatally shot by crazed fan Mark David Chapman. Yoko was obviously devestated by the loss. Since then, she’s continued to carry out the iconic musician’s legacy by being involved in philanthropic causes like disaster relief.

To see more photos of John and Yoko, click through the gallery.