The Mellon Clan
The Mellon Clan (19th century–present)
Powerful banking family (Pittsburgh, Penna, USA). Patriarch was Thomas Mellon and the next generation, his two sons, Andrew William Mellon and Richard Beatty Mellon, joined Henry Ford and John D. Rockefeller as the four wealthiest in the U.S.
See Mellon Financial Corporation and Bank of New York Mellon-- The company employs more than 48,000 staff worldwide and has over US$ 1.2 trillion in assets under management and $25.5 trillion in assets under custody and administration thereby being the largest deposit bank in the world.