John Winston Ono Lennon, MBE (born John Winston Lennon; 9 October 1940 – 8 December 1980) was an English musician, singer and songwriter who rose to worldwide fame as a founder member of the Beatles, one of the most commercially successful and critically acclaimed acts in the history of popular music.
Yoko Ono (born February 18, 1933) is a Japanese artist and peace activist, known for her work in avant-garde art, music and filmmaking and for her marriage to John Lennon (1969–1980).
http://en.wikipedia.org/wiki/Yoko_Ono