Allen Welsh Dulles (April 7, 1893 – January 29, 1969) was an American diplomat, lawyer, banker, and public official who became the first civilian and the longest-serving (1953–1961) Director of Central Intelligence (de facto head of the U.S. Central Intelligence Agency) and a member of the Warren Commission. Between stints of government service, Dulles was a corporate lawyer and partner at Sullivan & Cromwell. His older brother, John Foster Dulles, was the Secretary of State during the Eisenhower Administration.