| Philippe de Noailles | |
| Noble Family: | House of Noailles |
| Birth Date: | 17 April 1922 |
| Birth Place: | Paris, France |
| Father: | Henri-Antoine-Marie de Noailles |
| Mother: | Marie de La Rochefoucauld |
| Spouse: | Diane de Castellane Joan Douglas Dillon |
| Reign: | 1 November 1947 – 28 February 2011 |
| Reign-Type: | Tenure |
| Succession: | Duke of Mouchy |
| Predecessor: | Henri-Antoine-Marie |
| Successor: | Antoine-Georges-Marie |
| Issue: | Nathalie-Marie-Thérèse de Noailles Antoine Georges Marie de Noailles Alexis Marie de Noailles |
Philippe François Armand Marie de Noailles, Duc de Mouchy, Prince-Duc de Poix (17 April 1922 – 28 February 2011[1]) was a cadet of the French ducal house of Noailles (created dukes and peers of France in 1663 by Louis XIV), and second in succession to the senior title. He was the eldest son of Henri-Antoine-Marie de Noailles, Duc de Mouchy, Prince-Duc de Poix, and of Marie de La Rochefoucauld. Following his marriage to Joan Dillon, he became managing director of Domaine Clarence Dillon. Together, the couple acquired Château La Mission Haut-Brion, Château Laville Haut-Brion and Château La Tour Haut-Brion.[1]
Philippe was married twice. His first wife was Diane Rose Anne Marie de Castellane y Fernández Anchorena (b. Paris 19 February 1927 - d. 11 December 2010), whom he married in Paris on 14 April 1948 (divorced 1974). They had two sons and one daughter.
His second wife was HRH Princess Joan of Luxembourg, née Joan Douglas Dillon (b. New York City, 31 January 1935). She was the widow of Prince Charles of Luxembourg (a son of Charlotte, Grand Duchess of Luxembourg), whom she married in Sutton Park, Surrey, on 1 March 1967, the former wife of James Brady Moseley (New York City, 22 May 1931 – Boston, Massachusetts, 9 April 1998), son of wealthy Boston stockbroker Frederick S. Moseley, Jr. and wife Jane H. Brady, whom she married firstly in Paris on 1 August 1953, divorced in Washoe County, Nevada on 12 December 1955 and annulled in Rome on 22 June 1963. She was the daughter of U.S. Treasury Secretary C. Douglas Dillon and his wife, Phyllis Chess Ellsworth. They married at Islesboro, Maine, on 3 August 1978, without issue. By this marriage, the Duc de Mouchy had a stepson and two stepdaughters.
Through his great-grandmother, Princess Anne Murat, Philippe descended from Napoleon I's Marshal, Joachim Murat, King of Naples, and Caroline Bonaparte, Napoleon's sister. Anne was married to Antoine de Noailles, 6th Duc de Mouchy, 6th Prince-Duc de Poix, Philippe's great-grandfather.