Was one of Aristole Onassis's wives connected to Royalty or Aristocracy somehow?
(not Jackie Kennedy) his first wife?
Oh here it is , She was called Tina, it was AFTER she divorced Onassis, she married the Marquess of Blandford (a Spencer Churchill)
Athina Mary Livanos
Onassis Spencer-Churchill Niarchos
Known as Tina, she was married three times. Her husbands were:
Aristotle Onassis (28 December 1946-1960); with him she had two children, Alexander Onassis (1948-1973) and Christina Onassis (1950-1988). She divorced him when she discovered her husband having sex in the saloon of her daughter's namesake yacht, the Christina, with the opera singer Maria Callas.
John Spencer-Churchill, Marquess of Blandford (23 October 1961-1971)
Stavros Niarchos (21 October 1971-1974), her sister Eugenia's widower.
After her divorce from Aristotle Onassis, Tina dropped her married name and used her maiden name, until her marriage to the Marquess of Blandford.
While married to Stavros, Tina's son Alexander Onassis died in a plane crash at the age of 24. Tina was devastated by this loss.
Tina Niarchos died in Paris, where she was living with her then husband Stavros Niarchos, of a drug overdose. Her only living descendant is her namesake granddaughter, Athina Onassis de Miranda. Tina's daughter, Christina, sued her mother's widower for her mother's estimated $250 million (in 1974 dollars) estate claiming the marriage should be annulled under Greek law. Christina later dropped the lawsuit and Niarchos returned all of the money as well as Tina's jewelry, artwork and other personal effects.
http://en.wikipedia.org/wiki/Athina_LivanosThat's interesting question Kuei Fei, I also wonder why the Greek Princes did not pursue some of the Greek heiresses, there are definately a few (we never hear or read about) with money. I wonder if maybe because the Greek Princes spent time in America that they went for American heiresses for some reason.

America wealthy heiresses have long been known to also seek a British or European titled husband, to give them something an American marriage could not, a Princess, Duchess, Countess,Lady, title.
Didn't Lady Diana Spencer's American Grandmother bring more money to the Spencer clan also?
I think I read that somewhere?

I also remember reading that Aristotle felt his son should date Royalty, but his son kept choosing women who he knew his father would reject as a good choice. He loved to rebell against his father's wishes.
Alexander famously dated Fiona (née Campbell Walter) Thyssen, a woman 16 years his senior and of whom his father strongly disapproved [5]. It is believed now that Alexander had intentions of marrying her despite his father's energetic attempts to break them up. Fiona was divorced from Baron Hans Heinrich Thyssen-Bornemisza since 1965. She was a New Zealand-born fashion model. During their relationship, she was 40 years old and Alexander was 24
http://en.wikipedia.org/wiki/Alexander_Onassis.