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Mara Estela Martnez Cartas de Pern , better known as Isabel Martnez de Pern or Isabel Pern, is a former President of Argentina. She was the third wife of the late President Juan Pern. During her husbands third term as president from 1973 to 1974, Isabel served as both vice president and First Lady. Following her husbands death in office in 1974, Isabel served as president of Argentina fromJuly 1974 toMarch 1976. She holds the distinction of being the first female president of any country in the world.
Mara Estela Martnez Cartas was born in La Rioja, Argentina, into a lowermiddleclass family, daughter of Mara Josefa Cartas Olgun and Carmelo Martnez. She dropped out of school after the fifth grade. In the early 1950s she became a nightclub dancer, adopting the name Isabel, the saints name that she had chosen as a confirmation name.
Source: Wikipedia