María Francisca Palafox Portocarrero y KirkPatrick

María Francisca de Sales "Paca" de Palafox Portocarrero y Kirkpatrick, 16th Duchess of Peñaranda de Duero, also known as Paca de Alba, was a Spanish noblewoman and the sister of Eugénie de Montijo, Empress of the French. She was the 16th Duchess of Peñaranda de Duero in her own right and a Grandee of Spain, and she inherited many other titles from her father. She was also Duchess of Alba by virtue of her marriage to Jacobo Fitz-James Stuart, 15th Duke of Alba.