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Juan de Zavala y de la Puente, 1st Marquess of Sierra Bullones (27 December 1804, in Lima, Viceroyalty of Peru – 29 December 1879, in Madrid, Spain) was a Spanish noble and politician. After fighting in the First Carlist War, the Marquess served as Prime Minister of Spain. He was the son of Pedro José de Zavala y Bravo de Rivero, 7th Marquess of San Lorenzo, and Grimanesa de la Puente y Bravo de Lagunas, marchioness de la Puente. Wikipedia