Her life was overshadowed by tragedy from the beginning: The daughter of Christina Onassis and Thierry Roussel lost her mother to alcohol and pill abuse when she was just three years old.

The 40 year-old equestrian is the daughter of French businessman Thierry Roussel and socialite Christina Onassis, whose father was Aristotle Onassis, owner of one of the largest shipping fleets ...

Athina Onassis became one of the world’s youngest billionaires at 18, inheriting a fortune from her grandfather, Aristotle ...