When Willie B Agan was born on 26 April 1909, in Georgia, United States, his father, William Sterling Agan, was 29 and his mother, Pearl L. Reeves, was 20. He married Mallie Elizabeth White on 22 March 1931, in Haralson, Georgia, United States. They were the parents of at least 3 sons and 2 daughters. He lived in District 1259, Douglas, Georgia, United States in 1940 and Douglas, Hopetown, Cape Province, South Africa in 1991. He died on 9 December 1991, in Georgia, United States, at the age of 82, and was buried in Winston, Douglas, Georgia, United States.