Pietro Gregorio Ottoboni Boncompagni Ludovisi, 2nd Duke of Fiano Italian noble (1709-1747) (1709–1747) Parents Antoni I Boncompagni-Ludovisi Maria Eleonora I Boncompagni Children Marco Boncompagni Ludovisi Ottoboni, 5th Duke of Fiano Siblings Gaetano I Boncompagni-Ludovisi Partners Maria Francesca Ottoboni