Background
He was the son of Edgar Stirling Auchincloss (1847–1892) and Maria LeGrange Sloan.
United States representative politician
He was the son of Edgar Stirling Auchincloss (1847–1892) and Maria LeGrange Sloan.
He attended the Cutler School in New York City, and the Groton School, Groton, Massachusetts. Graduated from Yale University in 1908. Engaged in financial and stock brokerage business in New York City 1908-1940.
He was a governor of the New York Stock Exchange from 1921 to 1938. He was elected as a Republican to the Seventy-eighth and to the ten succeeding Congresses (January 3, 1943 – January 3, 1965). Was not a candidate for reelection in 1964 to the Eighty-ninth Congress.
In 1951, Auchincloss founded the Capitol Hill Club in Washington, District of Columbia He died in Alexandria, Virginia, aged 91 and was interred in Woodlawn Cemetery, the Bronx, New York City.
He was a member of the Rumson, New Jersey borough council from 1930 to 1937, and served as the borough"s mayor from 1938 to 1943.