Karen Armitage, and has issue: Charles Douglas Donnall Marie Cunningham (b. Rockport, Knox County, Maine, 8 August 1996) Louis Robert Dominic Marie Cunningham (b. London, 10 March 1998), actor famous (as Louis Cunningham) for playing Lord Corning in Bridgerton Donnall Philippe Cunningham (b. 2002) Prince Robert Louis François Marie of Luxembourg (b. Fischbach Castle, 14 August 1968), an administrator of the French winery estate Chateau Haut-Brion. He married in Boston, Suffolk County, Massachusetts, on 29 January 1994 Julie Elizabeth Houston Ongaro (b. Louisville, Jefferson County, Kentucky, 9 June 1966), daughter of urologist and Harvard professor Dr. Theodore Ongaro and wife Katherine Houston. Their children, being born of a non-dynastically approved marriage, bore initially the titles of "Comte/Comtesse de Nassau". On 27 November 2004, Grand Duke Henri issued an Arrêté Grand-Ducal upgrading Julie and her issue to the titles of "Prince/Princesse de Nassau" with qualification of "Altesse Royale" (Royal Highness): Princess Charlotte Katherine Justine Marie of Nassau (b. Boston, Suffolk County, Massachusetts, 20 March 1995) Prince Alexandre Théodore Charles Marie of Nassau (b. Aix-en-Provence, 18 April 1997) Prince Frederik Henri Douglas Marie of Nassau (b. Aix-en-Provence, 18 March 2002) Ancestry References External links Ancestry of Joan Douglas Dillon 1927 births 1977 deaths People from Colmar-Berg Luxembourgian royalty Luxembourgian princes Members of the Council of State of Luxembourg Princes of Bourbon-Parma House of Nassau-Weilburg Burials at Notre-Dame Cathedral, Luxembourg Sons of monarchs