Davis, Thomas Francis was born on May 8, 1853 in New York City. Son of James and Mary A. (Lennon) Davis.
Graduated from the United States Military Academy, 1875.
Commissioned Second lieutenant, 15th United States Infantry, June 16, 1875. Promoted through grades to brigadier general, May 16, 1913. Collector of customs, Santiago, Cuba, 1899.
Military secretary and adjutant general by detail, 1905. Governor Lanao District, Mindanao Province, P.I., 1909. Commanded 5th Brigade, 2d Division, United States of America, Galveston, Texas, 1913-1914, 6th Brigade, Texas City, Texas, and Naco and Douglas, Arizona, February 1, 1914.
Commanding Arizona District and 3d Provisional Infantry Division, Douglas, Arizona, to May 8, 1917, when retired by operation of law.
Married Paulina S. Hart, May 12, 1886 (died 1910).