Vincenzo Giustiniani, 6th Prince Giustaniani (1762-1826) (1762–1826) Parents Cecilia Mahony, Comtesse Mahony Beneditto Giustaniani, 5th Prince Giustiniani Children Maria Cecilia Giustaniani, Countess of Newburgh Siblings Maria Isabella Giustiniani Giacomo Giustiniani Chevalier Lorenzo Giustiniani Catherine Giustiniani Partners Maria Nicoletta di Mondragone