While the 500 Trillion can be debated, the Rothschild family are still in the top 2 richest world-wide next to Rockefeller (oil).
Rothschild are known for establishing a successful banking model which is still practiced today. Their entire family roster and milestones can be found here.
The root danger of their work model – war(s) bring in money. Without conflict, the gains are minimal.
The Royal Assassin 