The story
Baker, Donelson, Bearman, Caldwell & Berkowitz traces its roots back to Baker, Worthington, Crossley, Stansberry & Wolff, founded circa 1888 in Huntsville, Tennessee by James F. Baker.
James F. Baker's son, Howard Baker Sr., who served as a U.S. Representative from Tennessee, was a lawyer at the firm, as was his son Howard Baker Jr., who was U.S. Senate majority leader and White House Chief of Staff. Howard Baker Jr. was the last lawyer from the original Huntsville office, which closed after his death in 2014.
The current firm, headquartered in Memphis, is the result of a series of mergers of many different predecessor firms spread throughout the Southern United States. This includes its merger with healthcare law-focused Maryland firm Ober|Kaler, which was announced in 2016.
From Wikipedia’s article on Baker Donelson, shared under CC BY-SA 4.0.4