His supposed friendship with Diana, who died in 1997 in a car crash in Paris, would have come long before his conviction in 2008 on sex trafficking charges.
On the other hand, Princess Diana's former brother-in-law Prince Andrew stayed friends with Epstein after he was released from prison after serving nearly 13 months. Andrew stayed with Epstein at his New York home as recently as 2010.
Amid his friendship with Andrew, Epstein went to the Queen's Norfolk retreat of Sandringham on a shooting weekend, even helping to pay off some of Andrew's ex-wife Sarah Ferguson's debts.
Last year the Daily Mail revealed that Epstein had befriended Princess Diana's bridesmaid Clementine Hambro. She was working for Christie's auction house at the time when she was invited to Epstein's home in Santa Fe in 1999 to discuss art.
A month later she flew as his guest aboard his jet to Little Saint James in the US Virgin Islands.
Hambro, who is the great-granddaughter of Winston Churchill, said she was "not abused, nor did I see anyone abused. I was very lucky".