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Son of John Lennon and Yoko Ono Half-brother of Julian Lennon, and Kyoko Ono Cox. Living (and playing bass) with Yuka Honda of the band Cibo Matto [1999] John Lennon put his musical career on hold to focus full-time on raising young Sean (between 1975-1980), handing over breadwinning responsibilities to his wife, Yoko. Born on the same day of the year as his father. His father, John Lennon, wrote the song "Beautiful Boy" for him. Dated Bijou Phillips. [2000-February 2004] Made a cameo appearance in the season two opener of "Buffy The Vampire Slayer" (1997) (episode #2.1). In the scene where Buffy is dancing provocatively with Xander on the dance floor, Sean can be found playing on bass with Yuka Honda of the band Cibo Matto at the Bronze. Performed a song with the Brazilian rock band Soulfly entitled "Son Song" alongside singer 'Max Cavalera'/qv), who lost his stepson Dana in an unsolved murder case. Was named president of Lenono Music, which publishes most of his parents' compositions, including John Lennon's post-1973 songs. (John's earlier work is almost completely owned and/or controlled by Sony Music.) Was also given a complete set of his parents' recordings by Yoko Ono. Dated Elizabeth Jagger (Mick Jagger's daughter) for a short time in 2004 Frequently spent time with his mother's side of the family (the Onos and the Yasudas), when they visited Japan or relatives visited them in New York. He had little contact with his father's side, though, until Yoko took him to the British Isles in the 1980s, to meet the surviving Lennons and Stanleys (John's mother's family), and to see Liverpool, where John grew up. Father John kept a jukebox full of classic 45rpm singles for Sean in his playroom, wanting him to always have a musical environment. He kept no Beatles memorabilia or records around the house, though, and Sean only learned of John's former life when he saw Yellow Submarine at his babysitter's. John later gave Sean one Beatles single (title unknown), to satisfy his curiosity. His godfather is Elton John