Hugh Dudley Auchincloss Jr. (August 15, 1897 – November 20, 1976) was an American stockbroker and lawyer who became the second husband of Nina S. Gore, mother of Gore Vidal, and also the second husband of Janet Lee Bouvier, the mother of First Lady Jacqueline Kennedy Onassis (wife of President John F. Kennedy) and Caroline Lee Bouvier. Early life Auchincloss was born at Hammersmith Farm in Newport, Rhode Island in 1897. He was the son of Hugh Dudley Auchincloss (1858–1913), a merchant and financier, and Emma Brewster Jennings. His maternal grandparents were Oliver Burr Jennings and Esther Judson Goodsell. His uncles included Edgar Stirling Auchincloss, the father of U.S. Representative James C. Auchincloss, and John Winthrop Auchincloss, the grandfather of Louis Auchincloss, an attorney and author. He had two older sisters, Esther Judson Auchincloss and Ann Burr Auchincloss. Auchincloss graduated from Groton School in Massachusetts and then from Yale University in 1920, where he was elected to the Elihu Senior Society. He earned a law degree from Columbia University in 1924. Career From 1924 to 1926, Auchincloss practiced law in New York City, before joining the Commerce Department as a special agent in aeronautics. In 1927, he was appointed an aviation expert in the State Department. Four years later in 1931, he resigned government service to form a brokerage firm. In 1931, he bought his seat on the New York Stock Exchange for $235,000 (). It was reported that he used some of the large inheritance received from his mother to found the Washington, DC brokerage firm of "Auchincloss, Parker & Redpath" with Chauncey B. Parker and Albert G. Redpath. The firm eventually had 16 offices with two in New York City and the rest spread along the East Coast. In 1970, the firm merged with Thomson & McKinnon, a brokerage house based in New York. At the time of the merger, the new firm, known as Thomson & McKinnon Auchincloss, had assets of $160 million () and 58 offices. By the time of his Auchincloss' death in 1976, the firm was known as Thomson & McKinnon Auchincloss Kohlmeyer. During World War II Auchincloss worked for the Office of Naval Intelligence and the War Department and was commissioned with the rank of Lieutenant in the Naval Reserve on May 26, 1942, serving in the United States Navy during World War II. Personal life Auchincloss was married three times and had