He is the great-great-grandson of business magnat Giuseppe Francesco Agnelli (1789–1865) of the Agnelli family. Through his mother Princess Virginia Bourbon del Monte he is also a member of the Princely House of Bourbon del Monte Santa Maria Winthrop W. Aldrich (1885–1974), United States Ambassador to the United Kingdom and scion of the prominent political Aldrich family. Son of the influential Senator Nelson W. Aldrich (1841–1915) who was referred to by the press and public alike as the "general manager of the Nation." Descendant of John Winthrop (1587–1649) Baron Carlo Amato (1938–2021), Ambassador of The Sovereign Military Hospitaller Order of Saint John of Jerusalem of Rhodes and of Malta Chester Alan Arthur II (1864–1937), sportsman, art connoisseur, and son of U.S. President Chester A. Arthur (1829–1886). Descendant of General Uriah Stone, who served in the Continental Army during the American Revolution Count Alessandro Guiccioli de Asarta (1843–1922), Senator of the Kingdom of Italy and Congressman of the Kingdom of Italy Viscount Waldorf Astor (1879–1952), British politician and member of the House of Lords. Great-great-great-grandson of John Jacob Astor, the richest man in America at the time. Member of the prominent Astor family Robert Bacon (1860–1919), United States Secretary of State then U.S. Ambassador to France. Scion of the Boston Brahmin Bacon family whose members included philosopher and scientist Viscount Francis Bacon (1561–1626), U.S. Senator and Chief of Justice Ezekiel Bacon (1776–1870), and Massachusetts Congressman John Bacon (1738–1820) Arthur, The Earl of Balfour (1848–1930), Prime Minister of the United Kingdom, then First Lord of the Admiralty. Often associated to the Balfour Declaration, public statement issued by the British government in 1917 announcing support for the establishment of a "national home for the Jewish people" in Palestine His Royal Highness Prince Franz von Bayern, Duke of Bavaria, head of the House of Wittelsbach Count Guerin De Beaumont (1896–1955), French diplomat and active member of the Bilderberg Group. Member of the House of de Beaumont His Royal Highness Count Folke Bernadotte of Wisborg (1895–1948), diplomat and grandson of King of Sweden Oscar II. In World War II he negotiated the release of about 31,000 prisoners from German concentration camps. After the war, Bernadotte was unanimously chosen to be the United Nations Security Council mediator in the Arab–Israeli conflict of 1947–1948 Anthony Joseph Drexel Biddle Jr. (1897–1961), General and U.S. Ambassador to seven countries. Scion of the prominent Biddle family Francis Beverly Biddle, attorney