Bank One Corporation, formerly First Bancgroup of Ohio, was founded as a holding company for City National Bank of Columbus, Ohio, and several other banks in that state, all of which were renamed "Bank One" when the holding company was renamed Banc One Corporation. With the beginning of interstate banking they spread into other states, always renaming acquired banks "Bank One." After the First Chicago NBD merger, adverse financial results led to the departure of CEO John B. McCoy, whose father and grandfather had headed Banc One and predecessors. JPMorgan Chase completed the acquisition of Bank One in the third quarter of 2004.