Princess Joan Joan de Noailles, Dowager Duchess of Mouchy (née Joan Douglas Dillon, later Princess Charles of Luxembourg; born 31 January 1935)[1] is an American-born French duchess, the first commoner to marry into the reigning dynasty of Luxembourg, and is the former president of French Bordeaux wine company Domaine Clarence Dillon.
Wine Enthusiast Magazine describes Dillon as "a larger-than-life lady, with an indefinable, cultured, mid-Atlantic accent.
[4] The couple divorced in Washoe County, Nevada, US, on 12 December 1955; the marriage was annulled in Rome, Italy, on 22 June 1963.
Dillon married secondly on 1 March 1967 Prince Charles, brother of Grand Duke Jean of Luxembourg, at the Catholic Church of St. Edward the Confessor in Sutton Park, Surrey, UK.
They had two children: Dillon married thirdly in Islesboro, Maine, on 3 August 1978 Philippe, 7th Duke de Mouchy (1922–2011).