Career
Born in Baldwyn, Mississippi, Cox received a Bachelor of Arts from Vanderbilt University in 1909, and read law in 1911 to enter the Bar. He was in private practice in Baldwyn from 1911 to 1924, interrupted by service in the United States Army during World War I. He was a Chancellor of the First Chancery Court of Mississippi from 1924 to 1929. On March 1, 1929, Cox was nominated by President Calvin Coolidge to a new seat on the United States District Court for the Northern District of Mississippi, created by 45 Statistics
1422.
He was confirmed by the United States Senate on March 2, 1929, and received his commission the same day. He assumed senior status on March 22, 1957, and served in that capacity until his death.