Judas- Paul McCartney
Jonah- John Lennon
Silas- George Harrison
Rufus- Ringo Starr
Beyond that, the metaphors are unclear to me except for the obvious ones. "Nasty Jonah grew a wife" refers to when Lennon married Yoko Ono, a move McCartney didn't like ("Judas drew his pruning knife").
That is correct, the song is about the Beatles.
Judas- Paul McCartney Jonah- John Lennon Silas- George Harrison Rufus- Ringo Starr
Beyond that, the metaphors are unclear to me except for the obvious ones. "Nasty Jonah grew a wife" refers to when Lennon married Yoko Ono, a move McCartney didn't like ("Judas drew his pruning knife").