Louise Antoinette de Brancas-Villars French noblewoman (1755–1812) Parents Élisabeth-Pauline de Lauraguais Louis-Léon de Brancas Children Prosper Louis, 7th Duke of Arenberg Princesse et Duchesse Pauline d'Arenberg Prince Pierre d'Arenberg, 1st Duke of Arenberg Siblings Antoine-Constant de Brancas Alexandrine-Sophie de Brancas Lauraguais Partners Louis Engelbert, 6th Duke of Arenberg