In July 1941, Hickory Hill became the home of newly appointed United States Supreme Court Associate Justice Robert H. Jackson and his wife, Irene, who, in 1955, after his death, sold Hickory Hill to United States Senator John F. Kennedy (D−Massachusetts) and his wife, Jacqueline. After the 1956 Democratic National Convention, the house was sold to John's brother Robert F. Kennedy and his wife, Ethel, who had a growing family (eventually eleven children). While he lived at Hickory Hill, Robert Kennedy became Attorney General of the United States in 1961; a United States Senator in 1965; and a presidential candidate in 1968.