Isabel Martínez de Perón
María Estela Martínez Cartas de Perón (born 4 February 1931), better known as Isabel Martínez de Perón () or Isabel Perón, served as the 42nd President of Argentina from 1974 to 1976. She was the third wife of 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, when the military took over the government and placed her under house arrest for five years, before exiling her to Spain in 1981. She holds the distinction of having been the first woman to have had the title of "President", as opposed to a queen or prime minister.
Elisa Martínez Contreras
When Arévalo returned to Guatemala in 1944, Martínez came with him. He ran in the presidential election and won, and took office as President of Guatemala on March 15, 1945, serving for a full six-year term; she then assumed the informal position of First Lady. She dedicated herself to pioneering work in Guatemala in the area of social services, and founded soup kitchens, homes for homeless children, nurseries, and other institutions. Elisa Martínez also began to take charge of day care centers and schools. According to reports, her successor as First Lady, Maria Cristina Vilanova, affirmed that Martínez asked her to take charge of Martínez's work during the inauguration of Arévalo's successor, Jacobo Arbenz, on March 15, 1951.