Father of Juan Alfonso Stephen de Villalonga y Scott-Ellis, 10th Marqués de Castellvell (born on 22 June 1946), married to Michelle, and Carmen Beatrice de Villalonga y Scott-Ellis (born on 6 August1947), married in 1975 to Gregory-John Foster, both from his first marriage, and an adopted son, Fabricio de Villalonga y Stella (born on 8 September 1971), unmarried.