Donna Maria Ottavia Odescalchi 27 Aug 1757 Roma - 8 Mar 1829 Firenze (1757–1829) Parents Livio Odescalchi, 2nd Prince Odescalchi Maria Vittoria Corsini Children Giulio Cesare Rospigliosi Siblings Princess Flaminia Odescalchi Prince Balthazar Odescalchi