European idea and European peace. In 1976, he returned to Spain after Franco's death, and became a member of the Spanish Royal Academy. Personal life and death In 1912 de Madariaga married Constance Archibald, a Scottish economic historian. The couple had two daughters, Nieves Mathews (1917–2003) and professor and historian Isabel de Madariaga (1919–2014). Constance died in May 1970. In November 1970, de Madariaga married Emilia Székely de Rauman who had been his secretary since 1938 (who died in 1991, aged 83). Salvador de Madariaga y Rojo died age 92 on December 16 1978, in Locarno, Switzerland. Awards and recognition Madariaga received numerous prizes in his lifetime, including: Honorary Member of the Royal Academy of Spain (1936) Hansischer Goethe-Preis, University of Hamburg (1972) Charlemagne Prize (1973) Legacy The Madariaga European Foundation has been named after him and promotes his vision of a united Europe making for a more peaceful world. The 1979–1980 academic year at the College of Europe was named in his honour. An Oxfordshire blue plaque in honour of Salvador de Madariaga was unveiled at 3 St Andrew's Road, Headington, Oxford by his daughter Isabel on 15 October 2011. Works Madariaga wrote books in Spanish, English, French, and German. His best known is the novel El Corazón de Piedra Verde (Heart of Jade). Selected books The Sacred Giraffe: Being the Second Volume of the Posthumous Works of Julio Arceval (1925) (science fiction novel) Englishmen, Frenchmen, Spaniards: An Essay in Comparative Psychology, Oxford University Press, 1929 Disarmament, Coward-McCann, 1929 Anarchy or Hierarchy, Macmillan, 1937 Christopher Columbus, Macmillan, 1940 The Rise of the Spanish-American Empire, Hollis & Carter; Macmillan, 1947 The Fall of the Spanish-American Empire, Hollis & Carter, 1947; Macmillan, 1948 Bolivar, Hollis & Carter, 1952 Morning without Noon, 1973 El Corazón de Piedra Verde, 1942 (Heart of Jade) War in the Blood (sequel to Heart of Jade) Spain: a Modern History Hernán Cortés – Conqueror of Mexico, Macmillan, 1941 The Blowing up of the Parthenon, 1960 On Hamlet, Hollis & Carter, 1948 Latin America, Between the Eagle and the Bear, Praeger, 1962 Articles "Englishman, Frenchman, Spaniard," The Atlantic (April 1928) "An Admirable Variety: Further Diversities of National Character," The Atlantic (September 1928) "Disarmament--American Plan," The Atlantic (April 1929) "Spain: The Politics," The Atlantic (March 1937) See also Contributions to liberal theory List of peace activists References External links Madariaga – College of Europe Foundation Madariaga tennis Club in