While their more obnoxious counterparts are out conspicuously cavorting, these lowkey heirs are less visibly living in excess. You won't see these guys on the cover of Us Weekly on a Hilton's arm, because they're probably in some dimly lit private auction house buying a piece of art that's worth more money than you'll ever touch. No biggie.
See also: [The Hottest Heiresses You've Never Heard Of]
[Photo via @bransonsam]