Diego Pignatelli d'Aragona, 12th Duke of Monteleone, 11th Marquess of the Valley of Oaxaca Mexican nobleman (1774-1818) (1774–1818) Parents Ettore Pignatelli d'Aragona, 11th Duke of Monteleone, 10th Marquess of the Valley of Oaxaca Donna Anna Maria Piccolomini, Principessa di Valle Children Giuseppe Pignatelli d'Aragona, 11th Prince of Noia, 14th Duke of Monteleone, 12th Marquess of the Valley of Oaxaca Siblings Maria Francesca Pignatelli, Princess of Campofranco