Isabella Alvarez de Toledo y Silva Spanish noblewoman (1823-1867) (1823–1867) Parents Joaquina Maria del Pilar de Silva y Téllez-Girón Pedro de Alcántara Álvarez de Toledo, 17th Duke of Medina Sidonia Children Prospero Colonna di Paliano Donna Bianca Colonna Fabrizio Colonna Avella Marcantonio VI Colonna Siblings Teresa Álvarez de Toledo y Silva José Álvarez de Toledo, 18th Duke of Medina Sidonia Don Alonso Alvarez de Toledo y Silva, Marqués de Martorell Partners Giovanni Andrea I Colonna