8 Ariana Rockefeller
Billionaire Grandfather: David Rockefeller, Jr.
Family Fortune: US$3 billion
Position on 2010 Forbes Billionaire List: #47 Ariana’s last name is Rockefeller — as in John Rockerfeller — which tells us she’s a future heiress of a family that built it’s fortune on Texas gold. Her father, David Rockerfeller Jr., manages the an estimated three billion in assets through Rockefeller Financial Services, which holds court in the family’s namesake midtown Manhattan plaza.