María Estela Martínez Cartas de Perón (born 4 February 1931), better known as Isabel Martínez de Perón ; or Isabel Perón, is a former President of Argentina. She was the third wife of the former President, Juan Perón. During her husband's third term as president from 1973 to 1974, Isabel served as both vice president and First Lady. Following her husband's death in office in 1974, Isabel served as president of Argentina from 1 July 1974 to 24 March 1976.