Chase Bank traces its complex lineage through a series of massive banking mergers, with its most direct historic predecessor being the Chase Manhattan Bank. The Chase Manhattan Bank itself was formed through the monumental 1955 merger of the Bank of the Manhattan Company—founded originally by Aaron Burr—and the Chase National Bank, named in honor of Treasury Secretary Salmon P. Chase. Over subsequent decades, through further mega-mergers involving Chemical Bank, J.P. Morgan & Co., and Bank One, the institution consolidated its retail banking arm under the simplified and universally recognized brand name Chase, operating today as the prominent consumer banking subsidiary of JPMorgan Chase & Co. across the United States.