The Bank of America Merrill Lynch offices in the financial district, also known as the Square Mile, on January 24, 2017 in London, England.

Two of the most vaunted names in banking are fading into retirement.

Bank of America said Monday it will gradually retire the U.S. Trust brand to become the Bank of America Private Bank. The move is part of CEO Brian Moynihan's "one-company" strategy to more closely align the bank's various businesses and branding.

The company will also no longer use the Merrill Lynch brand for its investment banking, global markets and capital markets group.

Bank of America purchased U.S. Trust from Charles Schwab in 2006 for $3.3 billion, calling it "one of the largest and most respected" wealth management firms.

U. S. Trust, founded in 1853 in New York, is the first and oldest trust company in the United States and became synonymous with America's moneyed elite. Its founders included Marshall Field, Erastus Corning and Joseph Lawrence, then mayor of New York, while its early clients included Gilded Age tycoons such as William Waldorf Astor and Oliver Harriman.