María Estela Martínez Cartas
Isabel Perón, in full Isabel Martínez de Perón, née María Estela Martínez Cartas, (born February 4, 1931, La Rioja, Argentina), Argentine politician who served as president of Argentina in 1974-76, the world's first woman president. She was the third wife of President Juan Perón and served as vice president (1973-74) in his administration.