Jacob M. Dickinson
Jacob McGavock Dickinson was United States Secretary of War under President William Howard Taft from 1909 to 1911. He was succeeded by Henry L. Stimson.
Jacob McGavock Dickinson was born on January 30, 1851 in Columbus, Mississippi. His father, Henry Dickinson, served as a Chancery Judge in Mississippi from 1843 to 1854. His mother was Anne McGavock. His maternal greatgrandfather was Felix Grundy.
Source: Wikipedia