her majesty , in full dress , was accompanied by her royal highness , m. le countess de soissons , by the grand prior , by the duchess de longueville , by the duchess d'euboeuf , by the countess d'harcourt , by the countess de la roche-guyon , by m. de liancourt , by m. de baradas , by the countess de cramail , and by the chevalier de souveray .