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.
Concepción Arenal
Arenal's achievements were extraordinary in a largely traditional Spain, focusing her work on those marginalised in society. She wrote not only extensively on the state of prisons for both men and women, but also on the role of women in society in works such as "La Mujer del Porvenir" ["The Woman of the Future"] (1869), "The education of women", "The current state of women in Spain", "The work of women", "La mujer de su casa" ["The woman of the house"] (1883) and "Domestic service". It is this work which made her known as the founder of the feminist movement in Spain.