Mario Puzo, GFIII:

Based on actual Papal Banking Scandal which occurred in 1978-82Banco Ambrosiano, second largest private bank at the time in Italy collapsed in 1982 secondary to corruption and embezzlement/ misappropriations of monies (The Vatican Bank was also accused of funneling covert United States funds to Solidarity and the Contras through Banco Ambrosiano) > The Vatican Bank (Stituto per le Opere Religiose), largest shareholder in Ambrosiano at ~25%, lost about a quarter of a billion dollars> Scandal involved the Vatican’s bank's head, Bishop Paul Marcinkus, along with Roberto Calvi of Banco Ambrosiano> Cavi and Marcinkus were also later proven to be members in the illegal (in Vatican) Masonic Lodge Propaganda Due (aka P2)> The death of Pope John Paul I in 1978 is rumored to be linked to the Ambrosiano scandal secondary to his gaining knowledge of the corruption within the Bank and the Vatican members connection to P2( which was forbidden by The Holy See) > 1982– 33 days into his papacy, John Paul I was found dead— in bed, of ‘a heart attack.’>conflicting reports re: how he was found>1st Report: Found dead with a book Thomas à Kempis’ The Imitation of Christ at his side, reading light on; 2nd: Found dead gripping a piece of paper which contained names of high-ranking members of the P2 who had a role in numerous corruption scandals and the laundering of mafia drug money> Bishop Paul Marcinkus name was said to be on paper >Marcinkus was indicted in Italy in 1982 as an accessory in the $3.5 billion collapse of Banco Ambrosiano> Calvi was found dead in London in 1982, after disappearing just before the corruption became public> death was initially ruled suicide > on second inquest – ordered by his family – inconclusive> Pope John Paul II later promotes Ambrosiano to Pro-President of Vatican City— behind only the Pope and Secretary of State in Power.

In GFIII, MC bails out the Bishop, with 600 mil ,who was responsible for the 25% loss in banking scandal buy buying the Vatican’s share of a global real estate company Immobiliare (Illuminate??)Immobiliare global elite members try to thwart deal> Pope ultimately has to sign off> Pope is too sick to do deal > Pope dies> New Pope signs off on the deal