Doña Margarida Caetana Alvares Pereira de Melo 15 Jun 1745 - (b. 1745) Parents Henriette Gabriele de Lorraine-Brionne Jaime Álvares Pereira de Melo, 3rd Duke of Cadaval Children Doña Henriqueta de Meneses Siblings Dom Nuño Caetano Alvares Pereira de Melo, 4.Duque de Cadaval