 He served as the dean of the University of Mississippi School of Medicine, the director of the National Institutes of Health, and the president of the University of Florida.He was born in Toano, Virginia, a small unincorporated community in James City County near Williamsburg, in 1923, the fifth child of Dandridge Warren Marston and Helen Virginia Smith Marston.He graduated from the Virginia Military Institute (VMI) in Lexington, Virginia with a bachelor of science degree in 1944.