Who married Cecilia Mahony, Comtesse Mahony?

Beneditto Giustaniani, 5th Prince Giustiniani married Cecilia Mahony, Comtesse Mahony on May 18, 1757. Cecilia Mahony, Comtesse Mahony was 16 years old on the wedding day (16 years, 4 months and 21 days). Beneditto Giustaniani, 5th Prince Giustiniani was 18 years old on the wedding day (18 years, 2 months and 22 days). The age gap was 1 years, 10 months and 1 days.