Argentinian president, Juan Peron, (Juan Domingo Peron, 1895–1974) with his third wife, Isabel de Peron. (Photo by Keystone/Getty Images). 1962

Isabel Martinez de Peron, wife of exiled Argentinian president Juan Peron attends a press conference upon her arrival in Argentina for the 20th anniversary of her husband's rise to power. (Photo by Keystone/Getty Images). 18th October 1965

Isabel de Peron (Maria Estela Martinez), wife of the exiled former president of Argentina Juan Peron, attending a mass at a church in Buenos Aires on the occasion of the 43rd anniversary of the birth of Eva Peron, the late wife of Juan. (Photo by Keystone/Getty Images). 1966

Former Argentinian president, Juan Peron (centre) with his wife, Isabel de Peron (left) at Ciampino Airport, Rome. (Photo by Keystone/Getty Images). 1972

Ex-Argentinian President Juan Domingo Peron and third wife Isabel about to return to Argentina after 13 years of exile in Spain. (Photo by Central Press/Getty Images). 16th November 1972

Isabelita Peron, second wife of President Peron of Argentina, delivering a rousing address to the people. When Peron died a year after his triumphant return to political office in 1973, Isabelita remained Vice-President. (Photo by Keystone/Getty Images)

Mexian president, Luis Echeverria (left) with his wife and daughter (right) and exiled Argentinian leader, Juan Domingo Peron and his wife, Isabel de Peron after a meeting in Paris. (Photo by Keystone/Getty Images). 12th April 1973

Argentinian acting president, Isabel de Peron arriving in Madrid to attend to President Juan Peron during a period of illness. (Photo by Keystone/Getty Images). 24th June 1974

Vice-president of Argentina Isabel de Peron presiding at a ceremony to distribute houses to poor people living in emergency zones, at the presidential residence in Olivos, Buenos Aires. (Photo by Keystone/Getty Images). 19th March 1974

Maria Estela Martinez De Peron, President of Argentina with Dr Jose Lopez Rega, Welfare Minister, on her left addressing an unseen crowd. (Photo by Keystone/Getty Images). 5th December 1974

Isabel Peron, wife of Argentinian president General Juan Peron. She succeeded him after his death in office. (Photo by Keystone/Getty Images). 2nd July 1974

Argentinian acting president, Isabel de Peron with Prince Juan Carlos at a dinner hosted by him and his wife, Princess Sofia of Spain. (Photo by Keystone/Getty Images). 26th June 1974

Isabel de Peron, wife of Argentinian president Juan Peron, who went on to become president after his death. (Photo by Topical Press Agency/Getty Images). 1975

Argentinian President Isabel de Peron, nee Maria Estela Martinez, returns from a recuperation period and is received by provisory president Dr Italo Luder at Buenos Aires. (Photo by Keystone/Getty Images). 16th October 1975

Argentine president Isabel de Peron (Maria Estela Martinez) at Government House, Buenos Aires, with Dr Italo Argentino Luder, who will temporarily replace her during an absence for health reasons. (Photo by Keystone/Getty Images). 14th September 1975

General Augusto Pinochet, the President of Chile, with the Argentinian President, Maria Estela Martinez De Peron, at a dinner given in his honour in Buenos Aires. (Photo by Keystone/Getty Images). 22nd April 1975

Argentinian president Isabelita Peron, popular name of Maria Estela Martinez de Peron, announcing she will not stand for re-election this year. In the same year, 1976, she was ousted by a military coup and imprisoned for five years. (Photo by Keystone/Getty Images). 24th February 1976

Isabel de Peron, president of Argentina, making her first speech to the public since returning as president after a month's rest, from the balcony of Government House, Buenos Aires. (Photo by Keystone/Getty Images). 21st October 1975

Argentinian president Isabel de Peron, nee Maria Estela Martinez, at the oath taking ceremony for the new cabinet in Buenos Aires, Argentina. WIth her are economy minister Doctor Emilio Mondelli, interior minister Doctor Ares (in glasses) and foreign minister Doctor Quijano (far right). (Photo by Keystone/Getty Images). 4th February 1976

Argentinian soldiers stand guard outside Government House, (the “Casa Rosada” in Buenos Aires), after the coup which deposed President Isabel Martinez de Peron, widow of the late President Juan Peron. (Photo by Keystone/Getty Images). 29th March 1976

General Jorge Videla, one of the new military rulers who is involved in the coup to overthrow president Maria Estela Peron in Argentina, and is expected to eventually be nominated president. (Photo by Keystone/Getty Images). 25th March 1976