In Cosmic Trigger II: Down to Earth, Robert Anton Wilson wrote about Robert Calvi, known as "God's Banker" because of his ties to the Vatican Bank.
The Vatican Bank is back in the news again; Vatican authorities have seized $33 million from a Vatican bank account. The AP story notes, "The investigation is not the first trouble for the bank - formally known as the Institute for Works of Religion. In the 1980s, it was involved in a major scandal that resulted in a banker, dubbed "God's Banker" because of his close ties to the Vatican, being found hanging from Blackfriars Bridge in London."
Hat tip to Fly Agaric for spotting this.