I have also come up with some interpretations that are probably unique. It seems to me that "Eleanor Rigby" by the Beatles (1966) is about an agent of the the House Committee on Un-American Activities who is investigating a fake church used as a dead-drop for Soviet spies but is liquidated by a GRU assassin. The fake priest returns to the Soviet Union only to be liquidated in a purge ("no one was saved.")
I also believe "The End" by the Doors (1967) is about the coup d'etat that overthrew government of South Vietnam in 1963--the killer is the coup leader Duong Van Minh, the father is President Ngo Dinh Diem, the sister is his sister Tran Le Xuan, etc.
Well Jim Morrison's father was a higher up in the Navy, I can believe that.
But your "Eleanor Rigby" theory is way out there. I actually saw the name "Eleanor Rigby" on a grave in Liverpool, England, when taking a Beatles tour five years ago.
The tour guide said John and Paul would take a shortcut through the graveyard to get where they wanted to go.