John Julian Lennon, was born in 1963, the son of John and Cynthia Lennon. Paul McCartney later wrote the song "Hey Jude" for him when his parents were breaking up. He has some really good records out there.
Julian and Paul should do a song together, maybe as a tribute to John. However, that could start up the Julian as a replacement for John, Dahni for George the Beatles are getting back together rumours.