Christina O , former superyacht of Aristotle Onassis , up for sale . Onassis wed former Monaco first lady Jackie Kennedy on board luxury vessel . Expected to fetch $ 45 million when goes on sale in 1950s . It 's the palatial setting where billionaire shipping tycoon Aristotle Onassis married Jackie Kennedy , the former wife of U.S. President John F Kennedy . Backdrop to lavish 1950s parties , attended by Aristotle Onassis , Jackie Kennedy .
Christina O , former superyacht of Aristotle Onassis , up for sale . Onassis wed former Monaco first lady Jackie Kennedy on board luxury vessel . Expected to fetch $ 45 million when goes on sale in 1950s . Backdrop to lavish 1950s parties , attended by Aristotle Onassis , Jackie Kennedy .