The merged bank retained First National's name and charter, but was led by Central-State's management team.

(Allen B. Morgan had been named president in 1960, chief executive in 1967, and chairman in 1969, retiring in 1973.

"[5] In 2004, the company changed its name to First Horizon National Corporation to reflect its interstate growth.

In June 2008, the company sold its residential-mortgage origination and servicing business to Metlife.

The change encompassing First Tennessee Bank, Capital Bank, FTB Advisors and FTN Financial became effective at the close of business on October 25, 2019, with signage changes expected to be complete throughout those holdings by early 2020.

[13][14] On May 4, 2023, the companies announced that the acquisition would not proceed citing regulatory uncertainties, with TD owing First Horizon a total of $225 million in break-up fees as part of the termination agreement.

Reports of First Horizon's call off were paired with the news of PacWest Bancorp itself heading on a lifeline.

On October 11, 2016, First Tennessee announced the opening of its first Piedmont Triad retail branch in Winston-Salem.

The new regional headquarters was in Raleigh, where First Tennessee had four branches after buying TrustAtlantic Bank in 2015.